8x+21=4x+11+20+13x

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Solution for 8x+21=4x+11+20+13x equation: 



8x+21=4x+11+20+13x

We move all terms to the left:

8x+21-(4x+11+20+13x)=0

We add all the numbers together, and all the variables

8x-(17x+31)+21=0

We get rid of parentheses

8x-17x-31+21=0

We add all the numbers together, and all the variables

-9x-10=0

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

-9x=10

x=10/-9

x=-1+1/9

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