15x+13=20x-8

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Solution for 15x+13=20x-8 equation: 



15x+13=20x-8

We move all terms to the left:

15x+13-(20x-8)=0

We get rid of parentheses

15x-20x+8+13=0

We add all the numbers together, and all the variables

-5x+21=0

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

-5x=-21

x=-21/-5

x=4+1/5

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