解方程练习题3*(X-7)=0.6

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解方程练习题3*(X-7)=0.6
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解方程练习题3*(X-7)=0.6
解方程练习题3*(X-7)=0.6

解方程练习题3*(X-7)=0.6
3*(x-7)=0.6
3x-21=0.6
3x=21.6
x=7.2

答案7.2

3(x-7)=0.6
(x-7)=0.2
x=7.2

3*(X-7)=0.6
3X-21=0.6
3X=21.6
X=7.2

7.2

3*(x-7)=0.6
3*(x-7)/3=0.6/3(方程两边同时除以3)
x-7=0.2
x=0.2+7
x=7.2

x=7.2

x=7.2