8x+11=21-x

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Solution for 8x+11=21-x equation: 



8x+11=21-x

We move all terms to the left:

8x+11-(21-x)=0

We add all the numbers together, and all the variables

8x-(-1x+21)+11=0

We get rid of parentheses

8x+1x-21+11=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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