简便计算和方程.doc

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1、(0.5+x)+x=9.8÷275.3×99+75.32(X+X+0.5)=9.84.6×3.7+54×0.3725000+x=6x0.25×483200=450+5X+X64.2×87＋6.42×130X-0.8X=6125×8.812x-8x=4.82.5×32×1.257.5*2X=159.63÷2.5÷41.2x=81.619.82―6.57―3.43x+5.6=9.44.9×101x-0.7x=3.65.6×9891÷x＝1.3X+8.3=10.715x＝33x－8＝167(x-2)=2x+33x+9

2、=2718(x-2)=27012x=300-4x7x+5.3=7.43x÷5=4.830÷x+25=851.4×8-2x=66x-12.8×3=0.06410-3x=1703(x+0.5)=210.5x+8=436x-3x=181.5x+18=3x5×3-x÷2=80.273÷x=0.351.8x=0.972x÷0.756=909x-40=5x÷5+9=2148-27+5x=3110.5+x+21=56x+2x+18=78(200-x)÷5=30(x-140)÷70=40.1(x+6)=3.3×0.44(x-5

3、.6)=1.67(6.5+x)=87.5(27.5-3.5)÷x=4