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6x-(x+7)=13-15
We move all terms to the left:
6x-(x+7)-(13-15)=0
We add all the numbers together, and all the variables
6x-(x+7)-(-2)=0
We add all the numbers together, and all the variables
6x-(x+7)+2=0
We get rid of parentheses
6x-x-7+2=0
We add all the numbers together, and all the variables
5x-5=0
We move all terms containing x to the left, all other terms to the right
5x=5
x=5/5
x=1
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