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-7x+5(x-4)=-28
We move all terms to the left:
-7x+5(x-4)-(-28)=0
We add all the numbers together, and all the variables
-7x+5(x-4)+28=0
We multiply parentheses
-7x+5x-20+28=0
We add all the numbers together, and all the variables
-2x+8=0
We move all terms containing x to the left, all other terms to the right
-2x=-8
x=-8/-2
x=+4
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