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-3.14x35.2+6.28x(-23.3)-1.57x36.4

提取公因数3.14,则原式变为 3.14X[-35.2+2X(-23.3)-0.5X36.4] =3.14X[-35.2-46.6-18.2] =3.14X(-100) =-314

-3.14x35.2+6.28x(-23.3)-1.57x36.4 =-3.14x35.2+3.14x(-46.6)-3.14x18.2 =-3.14x(35.2+46.6+18.2) =-3.14x100 =-314

-3.14x35.2+6.28x(-23.3)-1.57x36.4 =-3.14x35.2+3.14x(-46.6)-3.14x18.2 =-3.14x(35.2+46.6+18.2) =-3.14x100 =-314

3(x-12)+23=35 3x-3×12+23=35 3x-36+23=35 3x-13=35 3x=35+13 3x=48 x=48÷3 x=16 全过程,有的其实可以省略的,,, 望采纳

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