3=2q-1

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Solution for 3=2q-1 equation: 



3=2q-1

We move all terms to the left:

3-(2q-1)=0

We get rid of parentheses

-2q+1+3=0

We add all the numbers together, and all the variables

-2q+4=0

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

-2q=-4

q=-4/-2

q=+2

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