4x+81=10x-9

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Solution for 4x+81=10x-9 equation: 



4x+81=10x-9

We move all terms to the left:

4x+81-(10x-9)=0

We get rid of parentheses

4x-10x+9+81=0

We add all the numbers together, and all the variables

-6x+90=0

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

-6x=-90

x=-90/-6

x=+15

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