2x=4x-90

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Solution for 2x=4x-90 equation: 



2x=4x-90

We move all terms to the left:

2x-(4x-90)=0

We get rid of parentheses

2x-4x+90=0

We add all the numbers together, and all the variables

-2x+90=0

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

-2x=-90

x=-90/-2

x=+45

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