几道数学题,求你门了!解方程:(-23 )*278 /(23 *23 *23 )130 -(-23 +35 )/(-2)16X-40=9X+164X=203 X+162(3-X)=-4(X+5)3(-2X-5)2X=912 (X-4)-3X+4)=-152 X-74 -5X+83 =1

问题描述:

几道数学题,求你门了!
解方程:
(-23 )*278 /(23 *23 *23 )
130 -(-23 +35 )/(-2)
16X-40=9X+16
4X=203 X+16
2(3-X)=-4(X+5)
3(-2X-5)2X=9
12 (X-4)-3X+4)=-152
X-74 -5X+83 =1

*移到左边,数字移到右边,就好做多了

(-23 )*278 /(23 *23 *23 ) =》原式=-(278/529)130 -(-23 +35 )/(-2) =》原式=13616X-40=9X+16=》7X=56 =》X=84X=203 X+16 =》-199X=16=》X=-(199/16)2(3-X)=-4(X+5) =》6-2X=-4X-20=》2X=-...