解方程4/5x+0.2-(1/2x-1.2)=2.6

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解方程4/5x+0.2-(1/2x-1.2)=2.6解方程4/5x+0.2-(1/2x-1.2)=2.6解方程4/5x+0.2-(1/2x-1.2)=2.64/5x+0.2-1/2x+1.2=2.6(

解方程4/5x+0.2-(1/2x-1.2)=2.6
解方程4/5x+0.2-(1/2x-1.2)=2.6

解方程4/5x+0.2-(1/2x-1.2)=2.6
4/5x+0.2-1/2x+1.2=2.6
(4/5-1/2)x=2.6-0.2-1.2
3/10x=1.2
x=1.2÷3/10
x=4