
1.8x-3.5×0.2=2.9 7(x+1.3)=56 (x-6)÷1.5=5 解下列方程.
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1.8x-3.5×0.2=2.9
1.8x-0.7=2.9
1.8x=0.7+2.9
1.8x=3.6
x=3.6/1.8
x=2
7(x+1.3)=56
x+1.3=56/7
x+1.3=8
x=8-1.3
x=6.7
(x-6)÷1.5=5
x-6=1.5×5
x-6=7.5
x=6+7.5
x=13.5
1.8x-0.7=2.9
1.8x=0.7+2.9
1.8x=3.6
x=3.6/1.8
x=2
7(x+1.3)=56
x+1.3=56/7
x+1.3=8
x=8-1.3
x=6.7
(x-6)÷1.5=5
x-6=1.5×5
x-6=7.5
x=6+7.5
x=13.5
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