the distance from marlys house to the library is 3/8 mile. the distance from marlys house to the school is 4/5 mile.how far is it from the library to marlys school??????????

Respuesta :

17/40 of a mile is the answer
3/8 = 15/40 4/5 = 32/40
Now since we have the same denominator we can just subtract 32-15=17
Now just put the denominator back under the 17 and you have your answer! 17/40