4=2q-2

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Solution for 4=2q-2 equation: 



4=2q-2

We move all terms to the left:

4-(2q-2)=0

We get rid of parentheses

-2q+2+4=0

We add all the numbers together, and all the variables

-2q+6=0

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

-2q=-6

q=-6/-2

q=+3

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