220-2q=100+q

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Solution for 220-2q=100+q equation: 



220-2q=100+q

We move all terms to the left:

220-2q-(100+q)=0

We add all the numbers together, and all the variables

-2q-(q+100)+220=0

We get rid of parentheses

-2q-q-100+220=0

We add all the numbers together, and all the variables

-3q+120=0

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

-3q=-120

q=-120/-3

q=+40

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