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7(2x+3)+8(x-7)=-79
We move all terms to the left:
7(2x+3)+8(x-7)-(-79)=0
We add all the numbers together, and all the variables
7(2x+3)+8(x-7)+79=0
We multiply parentheses
14x+8x+21-56+79=0
We add all the numbers together, and all the variables
22x+44=0
We move all terms containing x to the left, all other terms to the right
22x=-44
x=-44/22
x=-2
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