What are the addends that uses the LCD and is equivalent to 5 1/6 plus 4 1/10

Jack lives on a farm and has a large backyard. the area of his rectangular backyard is of a square mile. if the width of the yard is of a mile, what fraction of a mile is the length of the rectangular backyard?

For how answer my question this will be the last question can you answer in math subject

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2