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187=7x+3(5x-11)
We move all terms to the left:
187-(7x+3(5x-11))=0
We calculate terms in parentheses: -(7x+3(5x-11)), so:We get rid of parentheses
7x+3(5x-11)
We multiply parentheses
7x+15x-33
We add all the numbers together, and all the variables
22x-33
Back to the equation:
-(22x-33)
-22x+33+187=0
We add all the numbers together, and all the variables
-22x+220=0
We move all terms containing x to the left, all other terms to the right
-22x=-220
x=-220/-22
x=+10
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