Question

alguem me ajuda por favor a-b sendo a=2\3 e b=-3\5

Answer 1

2/3-(-3/5)=
2/3+3/5=
10/15+9/15=
19/15

Answer 2

2/3-(-3/5)
2/3+3/5
mmc 15
10/15+9/15 (cancela as bases iguais)
10+9=19