Question

calcule: a) 1/2 + 2/5=
b) 3/7 + 1/3=
c) 9/5+8=
d) 7 + 1/2=
e) 5-1/2=
f) 4/7-3/7=
g) 9/5-2/3=
h) 1 2/5-1 2/7=
i) 9 1/8÷9/7=
j) 9/3÷8=

Answer 1

Resposta:

a) 1/2 + 2/5= 0,9

b) 3/7 + 1/3= 0.7619047619

c) 9/5+8= 9.8

d) 7 + 1/2= 7.5

e) 5-1/2= 4.5

f) 4/7-3/7= S = 3/7+4/7

S = (3+4)/7

S = 7/7

S = 1

g) 9/5-2/3= 1.13...

h) 1 2/5-1 2/7= 0.11428571428

i) 9 1/8÷9/7= 7.09722222222

j) 9/3÷8= 0.375

Explicação passo-a-passo:

LETRA F) S = 3/7+4/7

S = (3+4)/7

S = 7/7

S = 1