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7x+7=-5x+19

We move all terms to the left:

7x+7-(-5x+19)=0

We get rid of parentheses

7x+5x-19+7=0

We add all the numbers together, and all the variables

12x-12=0

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

12x=12

x=12/12

x=1

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