Solve for t
t=3225
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2100-3t+7t=15000
Add 7t to both sides.
2100+4t=15000
Combine -3t and 7t to get 4t.
4t=15000-2100
Subtract 2100 from both sides.
4t=12900
Subtract 2100 from 15000 to get 12900.
t=\frac{12900}{4}
Divide both sides by 4.
t=3225
Divide 12900 by 4 to get 3225.
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