7+21x+13=8x-8

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Solution for 7+21x+13=8x-8 equation: 



7+21x+13=8x-8

We move all terms to the left:

7+21x+13-(8x-8)=0

We add all the numbers together, and all the variables

21x-(8x-8)+20=0

We get rid of parentheses

21x-8x+8+20=0

We add all the numbers together, and all the variables

13x+28=0

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

13x=-28

x=-28/13

x=-2+2/13

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