21x-13=11x+7

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Solution for 21x-13=11x+7 equation: 



21x-13=11x+7

We move all terms to the left:

21x-13-(11x+7)=0

We get rid of parentheses

21x-11x-7-13=0

We add all the numbers together, and all the variables

10x-20=0

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

10x=20

x=20/10

x=2

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