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7(x+3)=(2+13)
We move all terms to the left:
7(x+3)-((2+13))=0
We add all the numbers together, and all the variables
7(x+3)-(15)=0
We add all the numbers together, and all the variables
7(x+3)-15=0
We multiply parentheses
7x+21-15=0
We add all the numbers together, and all the variables
7x+6=0
We move all terms containing x to the left, all other terms to the right
7x=-6
x=-6/7
x=-6/7
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