The equation is 
The solved equation is 11
First, we must add 13 on both sides

The answer to the equation is 
Answer:
24 feet 9 inches
Step-by-step explanation:
14 ft + 9 ft = 23 ft
10 in + 11 in = 21 in - 1 ft = 9 in
23 feet + 1 ft + 9 in = 24 feet and 9 inches
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Answer:
756.748
Step-by-step explanation: