Answer:
t =5 13/20
Explanation:
t + 3/5 = 6 1/4
Subtract 3/5 from each side
t + 3/5 - 3/5 = 6 1/4 - 3/5
t = 6 1/4 - 3/5
Get a common denominator of 20
t = 6 1/4 *5/5 - 3/5 *4/4
t = 6 5/20 - 12/20
Borrow 20/20 from the 6
t = 5 + 20/20 +5/20 - 12/20
t = 5 25/20 - 12/20
t =5 13/20