Question

calcule o valor das expressoes
A)2/5+1/2-1/3

B)3/4x5/6+1/2

C)2/3+1/4x3

D)3/4:1/2-2/3

E)3/51/5:1/10

F)2 1/2+3/2x1/2

Answer 1

a)12/30+15/30-10/30=17/30
b)9/12 x 10/12 + 6/12=92/12
c)8/12+ 3/12 x 36/12=396/12
d)9/12:6/12-8/12= -6,5/12

Obs: observe se vc copiou a letra E e F certa q tem numeros sem sinais