Question

Convert 6 ft - 9 inches to decimal feet

Answer 1

You multiply 6 times 12 because
1ft is 12 in
The answer is 72

Answer 2

First you would convert 6 ft into inches

6 ft = 72 inches

Then subtract  

72 - 9 = 63

Then convert 63 into feet

63 = 5.25

The answer is 5.25