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3+6x=-4x-7(7+6x)
We move all terms to the left:
3+6x-(-4x-7(7+6x))=0
We add all the numbers together, and all the variables
6x-(-4x-7(6x+7))+3=0
We calculate terms in parentheses: -(-4x-7(6x+7)), so:We get rid of parentheses
-4x-7(6x+7)
We multiply parentheses
-4x-42x-49
We add all the numbers together, and all the variables
-46x-49
Back to the equation:
-(-46x-49)
6x+46x+49+3=0
We add all the numbers together, and all the variables
52x+52=0
We move all terms containing x to the left, all other terms to the right
52x=-52
x=-52/52
x=-1
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