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40x+30=4(10x+12)
We move all terms to the left:
40x+30-(4(10x+12))=0
We calculate terms in parentheses: -(4(10x+12)), so:We get rid of parentheses
4(10x+12)
We multiply parentheses
40x+48
Back to the equation:
-(40x+48)
40x-40x-48+30=0
We add all the numbers together, and all the variables
-18!=0
There is no solution for this equation
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