7x-3(x+1)=x-12

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Solution for 7x-3(x+1)=x-12 equation: 



7x-3(x+1)=x-12

We move all terms to the left:

7x-3(x+1)-(x-12)=0

We multiply parentheses

7x-3x-(x-12)-3=0

We get rid of parentheses

7x-3x-x+12-3=0

We add all the numbers together, and all the variables

3x+9=0

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

3x=-9

x=-9/3

x=-3

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