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4+2(3x+4x)=3x+4(3*4)
We move all terms to the left:
4+2(3x+4x)-(3x+4(3*4))=0
We add all the numbers together, and all the variables
2(+7x)-(3x+412)+4=0
We multiply parentheses
14x-(3x+412)+4=0
We get rid of parentheses
14x-3x-412+4=0
We add all the numbers together, and all the variables
11x-408=0
We move all terms containing x to the left, all other terms to the right
11x=408
x=408/11
x=37+1/11
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