4x-9=90-10x

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Solution for 4x-9=90-10x equation: 



4x-9=90-10x

We move all terms to the left:

4x-9-(90-10x)=0

We add all the numbers together, and all the variables

4x-(-10x+90)-9=0

We get rid of parentheses

4x+10x-90-9=0

We add all the numbers together, and all the variables

14x-99=0

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

14x=99

x=99/14

x=7+1/14

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