3x+5+7x-15=90

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



3x+5+7x-15=90

We move all terms to the left:

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

We add all the numbers together, and all the variables

10x-100=0

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

10x=100

x=100/10

x=10

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