Resposta:
Explicação passo a passo:
a
7/13+3/13=
10/13
b
1/2-1/3+5/6-3/4=
6/12-4/12+10/12-9/12=
2/12+10/12-9/12=
12/12-9/12=
3/12= [simplifica por 3]
1/4
c
2-7/6+3/4=
2/1-7/6+3/4=
24/12-14/12+9/12=
10/12+9/12=
19/12
d
10/3-7/3=
3/3=
1
e
3/4x1/2=
3/8
f
7/9:14/3=
7/9.3/14= [simplifica por 21]
21/126
1/6
g
16/15x7/4x5/8=
560/480= [simplifica por 80]
7/6
