3q-40=-7q

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Solution for 3q-40=-7q equation: 



3q-40=-7q

We move all terms to the left:

3q-40-(-7q)=0

We get rid of parentheses

3q+7q-40=0

We add all the numbers together, and all the variables

10q-40=0

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

10q=40

q=40/10

q=4

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