1、4x3x42 87(x2)609 1.6x7(1)b22b ( )(2)含有x的等式就是方程。(3)dd2d ( )(4)x6是方程8x543的解。3.8x7.7 x3.28.2 x4.97.4x2.25.5 1.5x11.55 4.5x3.437.19.1x29608 5.9x35142 x1.49.437x48x595 78(x9)1404 0.3x7.3(1)a2(2)含有未知数的式子就是方程。(3)yy2y ( )(4)x9是方程6x153的解。3x5.7 x8.29.1 x4.77.94.66.6 3.4x17 6.8x7.739.99.8x37747 4.9x79264 x4.15
2、.72x64x462 81(x3)972 1.2x6.5(1)c22c ( )(3)yy2y ( )(4)x8是方程4x824的解。3.6x8.8 x2.45.9 x4.17.42.19.7 4.4x22 9.1x6.738.85.3x40172 9.4x70400 x2.27.366x17x332 19(x7)304 3.3x7.3(1)s22n ( )(2)含有未知数x的算式就是方程。(3)9d99(d1) ( )(4)x6是方程4x1014的解。1.5x8.3 x4.41.1 x0.96.70.86.1 9.8x51.94 4.4x4.126.74.2x83127 6.8x93383 x
3、0.45.351x31x246 21(x5)189 1x5.4(2)含有x的式子就是方程。(4)x8是方程7x452的解。4.1x6.9 x3.78.2 x3.99.8x4.57 1.7x1.87 6.9x0.947.44.3x25104 5.2x76288 x1.66.120x56x228 47(x2)470 4.2x8.3(1)x22x ( )(3)ss2s ( )(4)x9是方程9x873的解。3.2x9.1 x1.73.1 x0.26.70.19 1.3x7.15 8.1x8.4245.3x17354 7.8x66636 x0.65.543x5x192 24(x9)408 0.8x6.
4、8(2)含有未知数x的等式就是方程。(4)x8是方程3x915的解。3.8x5.4 x5.93.3 x4.57.5x1.87.8 5.8x31.32 6x6189.2x83745 8.8x51213 x4.39.945x43x528 98(x5)1372 1.3x8.3(1)d22d ( )(4)x6是方程7x735的解。4.2x7.3 x4.89.2 x4.36.8x4.65.3 1.1x3.63 7.7x4.349.69x19431 4x73207 x4.28.615x12x189 12(x7)144 4.8x7.1(1)x2=2x ( )(2)含有未知数的等式就是方程。(4)x8是方程9
5、x765的解。3.3x6.1 x8.47.1 x2.55.5x0.27.5 8.5x45.9 6x8.715.37.5x38487 9.9x71325 x1.18.292x48x840 33(x6)429 4.7x5.6(1)t22t ( )(3)ss2s ( )(4)x6是方程6x630的解。2x5.9 x2.18.3 x3.88.52.87.2 0.1x0.54 4x1.614.48.1x85320 6.5x51534 x2.55.742x81x246 72(x4)936 4.2x8.8511的解。2.2x8.5 x5.37.1 x2.46.2x0.88.6 5.1x40.29 8x4.627.4
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