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103=2x+5(-3x-8)
We move all terms to the left:
103-(2x+5(-3x-8))=0
We calculate terms in parentheses: -(2x+5(-3x-8)), so:We get rid of parentheses
2x+5(-3x-8)
We multiply parentheses
2x-15x-40
We add all the numbers together, and all the variables
-13x-40
Back to the equation:
-(-13x-40)
13x+40+103=0
We add all the numbers together, and all the variables
13x+143=0
We move all terms containing x to the left, all other terms to the right
13x=-143
x=-143/13
x=-11
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