12x-9=90

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Solution for 12x-9=90 equation: 



12x-9=90

We move all terms to the left:

12x-9-(90)=0

We add all the numbers together, and all the variables

12x-99=0

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

12x=99

x=99/12

x=8+1/4

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