12x=20+7x

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Solution for 12x=20+7x equation: 



12x=20+7x

We move all terms to the left:

12x-(20+7x)=0

We add all the numbers together, and all the variables

12x-(7x+20)=0

We get rid of parentheses

12x-7x-20=0

We add all the numbers together, and all the variables

5x-20=0

We move all terms containing x to the left, all other terms to the right

5x=20

x=20/5

x=4

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