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30=-6(x+6)-7(x-2)
We move all terms to the left:
30-(-6(x+6)-7(x-2))=0
We calculate terms in parentheses: -(-6(x+6)-7(x-2)), so:We get rid of parentheses
-6(x+6)-7(x-2)
We multiply parentheses
-6x-7x-36+14
We add all the numbers together, and all the variables
-13x-22
Back to the equation:
-(-13x-22)
13x+22+30=0
We add all the numbers together, and all the variables
13x+52=0
We move all terms containing x to the left, all other terms to the right
13x=-52
x=-52/13
x=-4
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