Question

por favor resolver:(con proceso)(21/5-9/25) (3/12+3/8)

Answer 1

[(21/5*3/12)+(21/5*3/8)-(9/25*3/12)-(9/25*3/8)]
=63/60+63/40-27/300-27/200
=63/60+63/40-9/100-27/200