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78x-216=23(x-342)
We move all terms to the left:
78x-216-(23(x-342))=0
We calculate terms in parentheses: -(23(x-342)), so:We get rid of parentheses
23(x-342)
We multiply parentheses
23x-7866
Back to the equation:
-(23x-7866)
78x-23x+7866-216=0
We add all the numbers together, and all the variables
55x+7650=0
We move all terms containing x to the left, all other terms to the right
55x=-7650
x=-7650/55
x=-139+1/11
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