7x-10x=90

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Solution for 7x-10x=90 equation: 



7x-10x=90

We move all terms to the left:

7x-10x-(90)=0

We add all the numbers together, and all the variables

-3x-90=0

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

-3x=90

x=90/-3

x=-30

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