90=-2x-30

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Solution for 90=-2x-30 equation: 



90=-2x-30

We move all terms to the left:

90-(-2x-30)=0

We get rid of parentheses

2x+30+90=0

We add all the numbers together, and all the variables

2x+120=0

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

2x=-120

x=-120/2

x=-60

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