6x-12+3x+13=90

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Solution for 6x-12+3x+13=90 equation: 



6x-12+3x+13=90

We move all terms to the left:

6x-12+3x+13-(90)=0

We add all the numbers together, and all the variables

9x-89=0

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

9x=89

x=89/9

x=9+8/9

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