Solve for t
t = \frac{13}{2} = 6\frac{1}{2} = 6.5
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3t+7-t=20
Subtract t from both sides.
2t+7=20
Combine 3t and -t to get 2t.
2t=20-7
Subtract 7 from both sides.
2t=13
Subtract 7 from 20 to get 13.
t=\frac{13}{2}
Divide both sides by 2.
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