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3(2070+w)=6435
We move all terms to the left:
3(2070+w)-(6435)=0
We add all the numbers together, and all the variables
3(w+2070)-6435=0
We multiply parentheses
3w+6210-6435=0
We add all the numbers together, and all the variables
3w-225=0
We move all terms containing w to the left, all other terms to the right
3w=225
w=225/3
w=75
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