七年级数学下册方程组练习题文档格式.docx
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4x+6y=542x+y=7
9x+2y=872x+5y=19
5x+7y=525x+5y=65
5x+2y=227x+7y=203
8x+4y=56x+8y=15
x+4y=214x+y=29
5x+7y=417x+5y=54
5x+8y=443x+4y=38
3x+6y=249x+2y=62
9x+5y=464x+3y=36
9x+4y=469x+3y=99
7x+4y=424x+7y=95
9x+7y=133x+8y=51
4x+y=41x+6y=27
9x+2y=385x+5y=45
3x+6y=187x+9y=69
8x+2y=285x+4y=52
7x+8y=627x+6y=74
x+6y=147x+4y=67
3x+3y=272x+8y=26
7x+y=96x+6y=48
4x+6y=166x+3y=42
8x+2y=166x+8y=68
7x+y=117x+6y=66
4x+9y=772x+2y=22
8x+6y=947x+2y=47
2x+7y-z=24x+y+z=7
4x-4y+z=-32x+y-z=5
x+y=5x-y-2z=4
a+b+c=05x-4y+4z=13
4a+2b+c=32x+7y-3z=19
9a-3b+c=283x+2y-z=18
a+b+c=-23x-y+z=3
a-b+c=202x+y-3z=11
a+b=0x+y+z=12
a+b+c=-4x-2y-3z+18=0
49a+7b+c=8x+3y-2z-8=0
25a+5b+c=0x+y+2z-24=0
x+y=3x+y+z=12
2x-y+2z=2x+2y-z=6
x-y-z=-33x-y+z=10
2x+3y=62a+b+c=0
x-y+2z=-14a+2b+c=5
x+2y-z=52a-b+c=4
3x-y+z=4x+y-z=5
x+y+z=62x+3y+z=10
2x+3y-z=12x-2y-z=10
x+y+z=6x-y-5z=4
x-y=12x+y-3z=10
2x-y+z=53x+y+z=8
3x-y+2z=33x+2y+5z=2
2x+y-3z=11x-2y-z=6
x+y+z=124x+2y-7z=30
x+2y+3z=14x-y+z=1
2x+y+z=73x+y-2z=2
3x+y+2z=11x+2y-z=3
x+2y+3z=5x+y+z=6
2x+3y+6z=92x+3y+z=11
5x+3y+9z=153x-y-z=-2
3x-y+z=4x+2y+z=2
2x+3y-z+12x-4y+z=5
x+y+z=62x-2y-5z=0