15x+9=6x+90

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Solution for 15x+9=6x+90 equation: 



15x+9=6x+90

We move all terms to the left:

15x+9-(6x+90)=0

We get rid of parentheses

15x-6x-90+9=0

We add all the numbers together, and all the variables

9x-81=0

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

9x=81

x=81/9

x=9

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