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49=7(2x+3)
We move all terms to the left:
49-(7(2x+3))=0
We calculate terms in parentheses: -(7(2x+3)), so:We get rid of parentheses
7(2x+3)
We multiply parentheses
14x+21
Back to the equation:
-(14x+21)
-14x-21+49=0
We add all the numbers together, and all the variables
-14x+28=0
We move all terms containing x to the left, all other terms to the right
-14x=-28
x=-28/-14
x=+2
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