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-13=-5x+2(x-2)
We move all terms to the left:
-13-(-5x+2(x-2))=0
We calculate terms in parentheses: -(-5x+2(x-2)), so:We get rid of parentheses
-5x+2(x-2)
We multiply parentheses
-5x+2x-4
We add all the numbers together, and all the variables
-3x-4
Back to the equation:
-(-3x-4)
3x+4-13=0
We add all the numbers together, and all the variables
3x-9=0
We move all terms containing x to the left, all other terms to the right
3x=9
x=9/3
x=3
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