72-2x=90

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Solution for 72-2x=90 equation: 



72-2x=90

We move all terms to the left:

72-2x-(90)=0

We add all the numbers together, and all the variables

-2x-18=0

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

-2x=18

x=18/-2

x=-9

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