Question

ME AJUDEM POR FAVOR

7/8-4/9=?
3/4-1/6=?
3-14/5=?
3/4x7/9=?
3/7x5/6=?
7/2 : 2/5=?
2/5 / 1/6=?

Answer 1

Resposta:

Explicação passo a passo:

a)7/8 - 4/9 =

m.m.c = 72

63/72 - 32/72 = 31/72

b)3/4 - 1/6 =

m.m.c = 12

9/12 - 2/12 = 7/12

c)3 - 14/5  =

m.m.c = 5

15/5 - 14/5 = 1/5

d)3/4 x7/9 = 21/36 simplificando por 3 = 7/12

e)3/7 x 5/6 = 15/42 simplificando por 3 = 5/14

f)7/2 : 2/5 = 7/2 x 5/2 = 35/4

g)2/5 : 1/6 = 2/5 x 6/1 = 12/5