Provide an appropriate response.Mark's teacher asked him to solve the following problem: "One leg of a right triangle is 7 m longer than the other. The length of the hypotenuse is 13 m. Find the lengths of the legs." Mark translated the problem into the following equation: 
. Why is this equation not correct and what would the correct equation be?
What will be an ideal response?
If the length of the shorter leg is x then the length of the other leg is 
. Substituting into the Pythagorean theorem 
gives 
Mathematics
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, 
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