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385=-7(6x-13)
We move all terms to the left:
385-(-7(6x-13))=0
We calculate terms in parentheses: -(-7(6x-13)), so:We get rid of parentheses
-7(6x-13)
We multiply parentheses
-42x+91
Back to the equation:
-(-42x+91)
42x-91+385=0
We add all the numbers together, and all the variables
42x+294=0
We move all terms containing x to the left, all other terms to the right
42x=-294
x=-294/42
x=-7
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