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-4x+7(x-6)=-30
We move all terms to the left:
-4x+7(x-6)-(-30)=0
We add all the numbers together, and all the variables
-4x+7(x-6)+30=0
We multiply parentheses
-4x+7x-42+30=0
We add all the numbers together, and all the variables
3x-12=0
We move all terms containing x to the left, all other terms to the right
3x=12
x=12/3
x=4
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