7+x+12+x=39

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Solution for 7+x+12+x=39 equation:



7+x+12+x=39
We move all terms to the left:
7+x+12+x-(39)=0
We add all the numbers together, and all the variables
2x-20=0
We move all terms containing x to the left, all other terms to the right
2x=20
x=20/2
x=10

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