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187=7x+3(-6x+22)
We move all terms to the left:
187-(7x+3(-6x+22))=0
We calculate terms in parentheses: -(7x+3(-6x+22)), so:We get rid of parentheses
7x+3(-6x+22)
We multiply parentheses
7x-18x+66
We add all the numbers together, and all the variables
-11x+66
Back to the equation:
-(-11x+66)
11x-66+187=0
We add all the numbers together, and all the variables
11x+121=0
We move all terms containing x to the left, all other terms to the right
11x=-121
x=-121/11
x=-11
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