13+15x=20+7x

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Solution for 13+15x=20+7x equation: 



13+15x=20+7x

We move all terms to the left:

13+15x-(20+7x)=0

We add all the numbers together, and all the variables

15x-(7x+20)+13=0

We get rid of parentheses

15x-7x-20+13=0

We add all the numbers together, and all the variables

8x-7=0

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

8x=7

x=7/8

x=7/8

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