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4x+12x-7=16x+20
We move all terms to the left:
4x+12x-7-(16x+20)=0
We add all the numbers together, and all the variables
16x-(16x+20)-7=0
We get rid of parentheses
16x-16x-20-7=0
We add all the numbers together, and all the variables
-27!=0
There is no solution for this equation
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