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7x+15=3x+4+4x
We move all terms to the left:
7x+15-(3x+4+4x)=0
We add all the numbers together, and all the variables
7x-(7x+4)+15=0
We get rid of parentheses
7x-7x-4+15=0
We add all the numbers together, and all the variables
11!=0
There is no solution for this equation
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