Question

A team of deep-sea explorers is combing ocean waters in a submarine. The submarine is at an elevation of -355 2/7 feet. The explorers spot a humpback whale and dive downward an additional 92 4/7 feet. The new elevation of the submarine is feet.

Answer 1

-447 6/7 is the correct answer

Answer 2

$-355 \dfrac{2}{7} - 92 \dfrac{4}{7} = -447 \dfrac{6}{7}$

$\text {Answer: The new elevation is }-447 \dfrac{6}{7} \text { feet.}$