6x-18+3x-18=90

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Solution for 6x-18+3x-18=90 equation: 



6x-18+3x-18=90

We move all terms to the left:

6x-18+3x-18-(90)=0

We add all the numbers together, and all the variables

9x-126=0

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

9x=126

x=126/9

x=14

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