5x-3+7x+15=90

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Solution for 5x-3+7x+15=90 equation: 



5x-3+7x+15=90

We move all terms to the left:

5x-3+7x+15-(90)=0

We add all the numbers together, and all the variables

12x-78=0

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

12x=78

x=78/12

x=6+1/2

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