3x+8=91-x

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Solution for 3x+8=91-x equation: 



3x+8=91-x

We move all terms to the left:

3x+8-(91-x)=0

We add all the numbers together, and all the variables

3x-(-1x+91)+8=0

We get rid of parentheses

3x+1x-91+8=0

We add all the numbers together, and all the variables

4x-83=0

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

4x=83

x=83/4

x=20+3/4

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