13x-10+7x=90

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Solution for 13x-10+7x=90 equation: 



13x-10+7x=90

We move all terms to the left:

13x-10+7x-(90)=0

We add all the numbers together, and all the variables

20x-100=0

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

20x=100

x=100/20

x=5

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