7x+42=3x+12

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Solution for 7x+42=3x+12 equation:



7x+42=3x+12
We move all terms to the left:
7x+42-(3x+12)=0
We get rid of parentheses
7x-3x-12+42=0
We add all the numbers together, and all the variables
4x+30=0
We move all terms containing x to the left, all other terms to the right
4x=-30
x=-30/4
x=-7+1/2

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