1、0.79.667x23x810 34(x4)340 1.8x9.8(1)m2=2m ( )(2)含有未知数的等式就是方程。(3)6s66(s1) ( )(4)x6是方程6x432的解。1.3x7.6 x1.91.7 x1.35.9x4.58.9 6.7x25.46 6.6x7.8459.4x72398 6.1x54495 x1.5925x15x280 77(x3)462 0.7x8.6(1)a22a ( )(2)含有x的等式就是方程。(3)2c22(c1) ( )(4)x7是方程3x813的解。1x7.1 x54.1 x0.77.8x0.16.3 5.7x26.22 6x4.343.74.1x
2、74131 5.5x39401 x1.97.893x64x942 93(x1)837 2.6x7.5(1)d22d ( )(2)含有y的算式就是方程。(3)8d88(d1) ( )(4)x7是方程5x332的解。1.6x6.3 x6.24.5 x4.97.1x4.65.6 8.2x75.44 7.8x7.216.26.2x77109 9.5x45525 x1.88.339x44x83 72(x8)1008 1.6x9.8(1)t22t ( )(3)tt2t ( )3.8x9.1 x2.82.2 x3.89.1x2.58.3 4.2x38.64 5.2x9.521.78.5x50460 4.9x
3、79117 x4.88.197x47x144 20(x9)260 0.6x7.8(1)m22m ( )(2)含有未知数y的式子就是方程。(3)yy2y ( )(4)x4是方程7x325的解。5x8.2 x0.87.9 x3.97.427.9 3.4x8.84 8.6x5.671.89.7x43539 5.3x49428 x2.99.528x19x282 22(x5)242 0.4x8.2(3)bb2b ( )(4)x6是方程5x723的解。4.2x8.1 x0.33 x4.27.94.96.3 7.8x36.66 9.1x2.733.77.5x38187 6.9x53154 x3.28.94x
4、16x160 49(x9)490 4.1x8.7(2)含有未知数x的式子就是方程。(3)ss2s ( )(4)x5是方程4x1010的解。2.4x6.3 x7.45 x1.16.1x1.75.5 7.8x14.82 4.9x7.122.37.1x84342 4.3x21280 x2.67.539x9x240 71(x6)497 0.3x5.7(3)mm2m ( )(4)x8是方程9x666的解。1.6x7.3 x4.94.5 x2.48x4.48.7 8.6x10.32 4.5x1.925.17.8x32670 7x94256 x0.25.294x91x370 30(x4)360 0.9x8.
5、2(1)c22c ( )(2)含有未知数的式子就是方程。(3)xx2x ( )(4)x6是方程3x108的解。0.9x7.7 x8.94.4 x464.39.1 0.4x3.2 9.4x0.246.89.7x23850 5.3x48323 x0.96.92x94x576 60(x7)960 2.4x9(1)d2(3)aa2a ( )(4)x7是方程8x353的解。2.3x7.7 x4.11.7 x4.86.2x4.88.7 6.4x42.88 4.1x6.7229.9x50346 9x58392 x4.45.212x95x963 43(x3)344 0.8x8.4(1)b2=2b ( )(3)
6、dd2d ( )(4)x8是方程8x262的解。0.2x7.5 x0.29.9 x394.88.9 6.1x23.18 8.3x3.870.99.9x49842 8.2x29709 x4.45.727x53x320 70(x7)700 4.7x5.6(1)x22x ( )(2)含有y的式子就是方程。(4)x7是方程5x431的解。2.9x9.7 x9.92.4 x2.78.9x45.2 1.5x9 6.7x9.444.29.3x80571 4.1x59105 x1.27.422x89x333 36(x3)432 2x9.7(3)cc2c ( )(4)x9是方程7x756的解。5x6.2 x2.
7、20.8 x29.8x1.59.4 5.9x15.34 7.7x1.752.27.7x66165 7.9x51423 x0.6899x52x1359 77(x9)847 3.7x9.4(1)y2=2y ( )(3)ss2s ( )(4)x9是方程6x252的解。0.6x6.2 x2.25.7 x0.96.2x1.16.9 2.1x14.91 8x9.854.25.1x8370 9.1x73200 x2.37.727x40x536 89(x7)1246 5x9(1)x2=2x ( )(2)含有未知数x的算式就是方程。(3)2d22(d1) ( )(4)x7是方程8x551的解。1.9x6.3 x1.74.7 x2.974.68.4 9x83.7 8.2x2.846.4
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