(5x+9)+(2x+21)=8x+13

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Solution for (5x+9)+(2x+21)=8x+13 equation: 



(5x+9)+(2x+21)=8x+13

We move all terms to the left:

(5x+9)+(2x+21)-(8x+13)=0

We get rid of parentheses

5x+2x-8x+9+21-13=0

We add all the numbers together, and all the variables

-1x+17=0

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

-x=-17

x=-17/-1

x=+17

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