7x-1+6x+1=90

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Solution for 7x-1+6x+1=90 equation: 



7x-1+6x+1=90

We move all terms to the left:

7x-1+6x+1-(90)=0

We add all the numbers together, and all the variables

13x-90=0

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

13x=90

x=90/13

x=6+12/13

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