12+8+8x-8=90

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Solution for 12+8+8x-8=90 equation: 



12+8+8x-8=90

We move all terms to the left:

12+8+8x-8-(90)=0

We add all the numbers together, and all the variables

8x-78=0

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

8x=78

x=78/8

x=9+3/4

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