7x+7=-8+4x+21

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Solution for 7x+7=-8+4x+21 equation: 



7x+7=-8+4x+21

We move all terms to the left:

7x+7-(-8+4x+21)=0

We add all the numbers together, and all the variables

7x-(4x+13)+7=0

We get rid of parentheses

7x-4x-13+7=0

We add all the numbers together, and all the variables

3x-6=0

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

3x=6

x=6/3

x=2

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