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9x+12+7x=4(3x+x)
We move all terms to the left:
9x+12+7x-(4(3x+x))=0
We add all the numbers together, and all the variables
9x+7x-(4(+4x))+12=0
We add all the numbers together, and all the variables
16x-(4(+4x))+12=0
We calculate terms in parentheses: -(4(+4x)), so:We add all the numbers together, and all the variables
4(+4x)
We multiply parentheses
16x
Back to the equation:
-(16x)
12!=0
There is no solution for this equation
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