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-3=(-13+q)/4
We move all terms to the left:
-3-((-13+q)/4)=0
We add all the numbers together, and all the variables
-((q-13)/4)-3=0
We multiply all the terms by the denominator
-((q-13)-3*4)=0
We calculate terms in parentheses: -((q-13)-3*4), so:We get rid of parentheses
(q-13)-3*4
We add all the numbers together, and all the variables
(q-13)-12
We get rid of parentheses
q-13-12
We add all the numbers together, and all the variables
q-25
Back to the equation:
-(q-25)
-q+25=0
We add all the numbers together, and all the variables
-1q+25=0
We move all terms containing q to the left, all other terms to the right
-q=-25
q=-25/-1
q=+25
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