Solve for t
t=2
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12t=13+21-10
Combine 7t and 5t to get 12t.
12t=34-10
Add 13 and 21 to get 34.
12t=24
Subtract 10 from 34 to get 24.
t=\frac{24}{12}
Divide both sides by 12.
t=2
Divide 24 by 12 to get 2.
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