8x+x=90+x

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Solution for 8x+x=90+x equation: 



8x+x=90+x

We move all terms to the left:

8x+x-(90+x)=0

We add all the numbers together, and all the variables

8x+x-(x+90)=0

We add all the numbers together, and all the variables

9x-(x+90)=0

We get rid of parentheses

9x-x-90=0

We add all the numbers together, and all the variables

8x-90=0

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

8x=90

x=90/8

x=11+1/4

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