5 1/2 + 12 (1 1/4)
= 5 1/2 + 12 (5/4)
= 5 1/2 + 53/4
= 11/2 + 53/4
= 22/4 + 53/4
= 75/4
= 18 3/4
Answer: 18 3/4 inches
Hoped this helped
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