0.3(x+2.2)=7.8解方程

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0.3(x+2.2)=7.8解方程0.3(x+2.2)=7.8解方程0.3(x+2.2)=7.8解方程0.3(x+2.2)=7.83(x+2.2)=78x+2.2=26x=23.8

0.3(x+2.2)=7.8解方程
0.3(x+2.2)=7.8解方程

0.3(x+2.2)=7.8解方程
0.3(x+2.2)=7.8
3(x+2.2)=78
x+2.2=26
x=23.8