Answer:
a=13 3/4 (13.75)
Step-by-step explanation:
1 2/5a=19 1/4
a=19 1/4÷1 2/5
a=19 1/4÷7/5
a=19 1/4x5/7
a=77/4x5/7
a=385/28
a=13 21/28
a=13 3/4
