(1)2(2a-3b)-3(2b-3a)
=4a-6b-6b+9a
=13a-12b
(2)3(x+1)-2(x+2)=2x+3
3x+3-2x-4=2x+3
-x=4
x=-4
計算下面各題.謝謝,要過程.
計算下面各題.謝謝,要過程.
(1)2(2a-3b)-3(2b-3a)
(2)3(x+1)-2(x+2)=2x+3
(1)2(2a-3b)-3(2b-3a)
(2)3(x+1)-2(x+2)=2x+3
數(shù)學(xué)人氣:861 ℃時間:2020-06-16 07:28:50
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