七年级数学下册计算题20Word文档格式.docx

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七年级数学下册计算题20Word文档格式.docx

(xy+—y+—)-(xy-x+5)

48

(9y-8x+5z2)-(4y+3x-z2)

(8k2+9k)+(8k2+5k-7)

(9a2-6a-8b)-(5a2+4a-9b)

8x2-(6x2-3x-8)-(x+6)

6y2+(5x2-y)-(8x2-3y2)

3

(4x2-9xy+—x)-(4x2-9xy-x)

56

(—xy+2y2-3)-(x2+—xy+6y2+8)

65

19

(xy+—y-—)-(xy+x+1)

78

(5y+7x-8z2)+(4y+6x-2z2)

(3k2+4k)+(6k2-7k-6)

(2a2-4a+6b)+(7a2-8a-7b)

8x2-(6x2+4x+8)+(4x-7)

8y2-(7x2-y)-(6x2+7y2)

(5x2+2xy+—x)+(6x2-4xy-4x)

51

(—xy-8y2-3)+(x2+—xy-2y2-5)

14

(xy-—y+—)-(xy+x-3)

75

(9y+3x+7z2)+(3y-3x-9z2)

(3k2+6k)+(8k2+4k-6)

(5a2-4a-8b)-(a2+7a+6b)

2x2-(7x2+8x-1)+(7x-5)

4y2-(7x2+y)-(3x2+5y2)

(3x2+9xy-—x)-(x2-xy+2x)

15

(—xy-4y2+4)+(x2+—xy+4y2+4)

66

(xy-—y-—)+(xy-x-1)

58

(7y-2x-2z2)+(5y+8x-9z2)

(5k2+4k)+(6k2-k-7)

(8a2-a+8b)-(3a2-9a+3b)

6x2+(5x2+4x+7)+(x-5)

y2-(6x2-y)+(2x2-9y2)

(3x2-xy-—x)+(9x2-8xy+6x)

(—xy+7y2+5)-(x2+—xy-y2+1)

74

83

(xy-—y+—)+(xy-x+1)

74

(y+4x-6z2)+(9y-4x-z2)

(3k2+4k)-(8k2+6k-8)

(4a2+7a+b)+(4a2+5a+5b)

6x2+(5x2+6x-9)+(3x+2)

8y2+(4x2+y)+(9x2+3y2)

7

(7x2-3xy+—x)-(4x2-3xy-6x)

(—xy-8y2-6)-(x2+—xy-5y2-6)

38

67

(xy-—y+—)+(xy+x-9)

(5y-x+2z2)-(y+8x-9z2)

(3k2+k)-(3k2+4k-2)

(9a2-7a-4b)+(4a2-4a+2b)

4x2-(2x2+9x-8)+(2x-2)

y2+(2x2+y)+(x2-8y2)

(4x2+4xy-—x)+(5x2-xy+3x)

13

(—xy-3y2+3)+(x2-—xy+6y2+3)

84

11

(xy-—y+—)+(xy-x+2)

46

(y+6x+8z2)+(2y-7x-4z2)

(2k2+5k)-(3k2-9k+3)

(4a2+2a+3b)-(7a2-8a+4b)

9x2-(5x2+7x+7)-(6x+5)

9y2-(7x2-y)+(2x2-7y2)

(3x2-7xy+—x)-(7x2-3xy+6x)

91

(—xy-y2+2)+(x2-—xy+5y2+2)

24

(xy+—y-—)+(xy+x+4)

33

(2y-3x-z2)-(2y-5x+4z2)

(7k2+7k)+(7k2-k-9)

(8a2-4a-b)-(3a2-a+6b)

6x2+(2x2-6x+1)-(8x-3)

2y2+(x2-y)-(6x2+y2)

(3x2-5xy+—x)-(7x2+9xy-7x)

21

(—xy-4y2-9)+(x2-—xy-9y2-4)

33

56

(xy-—y-—)+(xy-x+7)

47

(4y+7x+7z2)-(9y-9x-5z2)

(9k2+9k)-(7k2-5k-1)

(5a2+7a-9b)-(8a2+2a-b)

5x2+(5x2+4x-1)-(x-4)

8y2-(2x2+y)+(8x2+y2)

8

(8x2-6xy-—x)+(5x2-5xy+8x)

46

(—xy-3y2+6)-(x2+—xy+8y2+5)

57

77

(xy+—y+—)-(xy-x+2)

68

(y-6x-2z2)-(7y-4x-2z2)

(7k2-9k)+(8k2-4k-6)

(a2-8a-6b)-(9a2-2a+3b)

6x2-(7x2+6x+9)+(x+6)

6y2+(x2+y)+(2x2+4y2)

(6x2-9xy+—x)-(5x2+9xy-4x)

(—xy-8y2-1)-(x2+—xy-9y2+9)

37

12

(xy+—y+—)+(xy-x+9)

63

(9y-8x-9z2)-(7y-7x-7z2)

(7k2+7k)+(7k2+9k-9)

(9a2-2a+7b)+(5a2+7a-5b)

9x2-(4x2+9x-4)+(5x+8)

2y2+(4x2-y)-(9x2-5y2)

(2x2+4xy+—x)-(3x2-9xy-3x)

(—xy+4y2+6)-(x2-—xy-8y2+1)

(xy+—y+—)-(xy-x-3)

65

(2y+7x+2z2)+(4y-2x-5z2)

(9k2-6k)-(7k2+3k-3)

(6a2-5a+3b)-(7a2+7a-b)

7x2-(2x2-x-6)+(6x+5)

4y2+(x2+y)+(3x2+2y2)

(8x2+9xy+—x)-(9x2-4xy-9x)

(—xy+7y2+7)-(x2-—xy-6y2-3)

(xy-—y-—)+(xy+x+7)

55

(2y-3x-4z2)+(6y+9x+9z2)

(4k2-3k)+(6k2+6k+5)

(4a2+3a+8b)-(7a2+a+2b)

7x2-(5x2+5x-7)+(2x-3)

2y2+(6x2+y)-(6x2+8y2)

(x2-4xy-—x)-(5x2+4xy-8x)

41

(—xy+2y2-7)+(x2-—xy+4y2-2)

(xy-—y-—)-(xy+x-5)

57

(y-2x+z2)-(y+4x-z2)

(3k2+4k)-(6k2-7k+8)

(2a2+4a+2b)-(5a2+3a+9b)

5x2-(2x2-7x+2)-(9x-9)

2y2-(4x2+y)-(6x2-4y2)

2

(6x2-3xy+—x)-(9x2-4xy-6x)

17

(—xy-8y2+6)+(x2-—xy+7y2-3)

76

61

(xy-—y+—)+(xy+x+2)

(6y+4x-2z2)+(y-7x-3z2)

(4k2+k)-(3k2+7k-3)

(9a2+7a+8b)-(6a2+9a-2b)

7x2-(9x2+2x-1)-(8x-3)

5y2+(3x2-y)-(9x2-3y2)

(x2+9xy-—x)-(4x2-9xy-7x)

16

(—xy+8y2+7)-(x2+—xy-5y2+3)

(xy-—y-—)+(xy-x-5)

(4y-2x+5z2)-(5y+2x-3z2)

(k2-3k)-(7k2-5k+4)

(5a2-7a+b)+(8a2+4a+4b)

2x2+(7x2+8x+6)-(2x-5)

8y2-(8x2-y)+(4x2+2y2)

(2x2+xy-—x)-(5x2-4xy-6x)

(—xy-y2+4)+(x2+—xy-4y2+1)

77

69

(xy+—y-—)+(xy+x-1)

(7y-6x+6z2)+(9y-8x-2z2)

(6k2-9k)-(6k2+2k-6)

(8a2-a+4b)+(8a2+7a-8b)

4x2-(5x2-7x-6)-(2x+2)

5y2-(5x2-y)-(6x2+7y2)

(4x2+6xy+—x)+(8x2-2xy-x)

(—xy-6y2+3)-(x2-—xy+5y2-7)

34

(xy-—y+—)+(xy+x+4)

37

(7y+9x+3z2)+(2y-x+5z2)

(7k2+3k)-(9k2-9k+2)

(9a2+5a-b)+(7a2+5a+b)

8x2+(2x2+7x-8)+(x+2)

5y2-(3x2+y)+(5x2-2y2)

(8x2+8xy+—x)-(3x2-5xy+8x)

(—xy+9y2-9)+(x2-—xy-4y2+6)

(y+4x-4z2)+(7y-8x+9z2)

(2k2-3k)-(4k2+k-8)

(2a2+a+b)-(2a2-2a-5b)

4x2+(4x2+6x-4)-(3x+3)

8y2+(4x2+y)+(3x2+8y2)

(3x2-9xy+—x)+(8x2+6xy-5x)

(—xy-9y2-1)-(x2-—xy+4y2+9)

66

(xy-—y-—)+(xy+x-4)

(8y+6x+2z2)+(4y-4x-2z2)

(4k2+6k)-(7k2+8k+6)

(8a2+7a-9b)-(5a2+a+7b)

3x2+(7x2+5x-1)-(7x-9)

8y2-(4x2+y)-(3x2-2y2)

(4x2-2xy+—x)-(3x2+xy-4x)

44

(—xy-y2-3)-(x2-—xy-3y2+7)

35

(xy-—y+—)+(xy-x-1)

(4y-9x-z2)+(9y-2x+8z2)

(8k2-k)-(2k2+3k+3)

(8a2+3a-b)+(7a2-7a-b)

2x2-(x2+3x+5)+(x+3)

y2-(3x2-y)-(7x2+6y2)

(7x2+4xy+—x)+(x2+xy+5x)

(—xy-2y2+9)+(x2+—xy+2y2-9)

15

(xy-—y-—)+(xy+x-2)

84

(6y+x+5z2)-(8y-6x-3z2)

(5k2-k)-(2k2+2k-3)

(4a2+9a+6b)+(2a2-9a-b)

4x2+(x2+3x+6)-(9x-1)

4y2+(6x2-y)-(9x2+9y2)

(9x2+2xy-—x)-(9x2+9xy-5x)

12

(—xy-7y2-1)+(x2-—xy+5y2-6)

53

64

(xy+—y+—)+(xy-x+7)

(3y+9x-7z2)-(6y+8x-2z2)

(4k2+3k)-(7k2-k-3)

(6a2-7a+7b)+(6a2+5a+4b)

6x2-(9x2+2x+1)+(6x-9)

3y2-(8x2-y)-(7x2+6y2)

(4x2+6xy-—x)+(4x2-9xy-7x)

(—xy+6y2-3)-(x2+—xy+4y2-9)

31

(xy-—y-—)-(xy+x+9)

(y-8x-3z2)+(7y+x-9z2)

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