Answer:
3ft 11 inches
Explanation:
This is the answer because you subtract 7 by 3 which is 4 now subtract one in while in feet that is 3 ft 11 inches
3ft 11in
you need to break the 7ft into 6ft and 12in. Then subract the 6ft by the 3ft and the 12in by the 1in.
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