Question

me ajudem a fazer o dever e pra hoje

Answer 1

b)5/8+6/9-3/6= vos tirar o m.m.c de 8, 9, 6 que da72
faz assim: 45+48-36=
93-36=57

c) 2/7+3/5+1/2= m.m.c de 7, 5,2 é 70
20+42+35=97

d)3/16+1/8-3/24
9/48+6/48-6/48=
15/48-6/48=9/48=3/16

e)
6/9+1/3-6/5
30/45+15/45-54/45=
45/45-54/45= impossível

f)3/7+2/3-7/14=
18/42+28/42-21/42
46-21=25