3(2x+7)-(x-3)=9

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Solution for 3(2x+7)-(x-3)=9 equation: 



3(2x+7)-(x-3)=9

We move all terms to the left:

3(2x+7)-(x-3)-(9)=0

We multiply parentheses

6x-(x-3)+21-9=0

We get rid of parentheses

6x-x+3+21-9=0

We add all the numbers together, and all the variables

5x+15=0

We move all terms containing x to the left, all other terms to the right

5x=-15

x=-15/5

x=-3

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