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8x-7=5x(-1)
We move all terms to the left:
8x-7-(5x(-1))=0
We calculate terms in parentheses: -(5x(-1)), so:We get rid of parentheses
5x(-1)
We multiply parentheses
-5x
Back to the equation:
-(-5x)
8x+5x-7=0
We add all the numbers together, and all the variables
13x-7=0
We move all terms containing x to the left, all other terms to the right
13x=7
x=7/13
x=7/13
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