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q=7000-100q
We move all terms to the left:
q-(7000-100q)=0
We add all the numbers together, and all the variables
q-(-100q+7000)=0
We get rid of parentheses
q+100q-7000=0
We add all the numbers together, and all the variables
101q-7000=0
We move all terms containing q to the left, all other terms to the right
101q=7000
q=7000/101
q=69+31/101
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