Question

2 2/5 + 11/2 + 1/3=
3/2 - 2/3=
3/4 × 1/2=
14/5 × 2/7 × 49/6=
13/49 ÷39/14=
14/3 ÷2 1/3=
(1/2) 2
(1/3) 4
(2/3) 0
por favor façao mmc mim ajude serei muito grata!!!

Answer 1

a) 2 2/5 - 12/5
12/5 + 11/2 + 1/3 =
mmc: 30

6x12 + 15x11 + 10x1 = 72 + 165 + 10
________________     ____________
         30                                      30

= 247/35

b) 3/2 - 2/3 =

mmc: 6

3x3 - 2x2 = 9 - 4 = 5/6
_______    ____  
     6                6 

c) 3/4x1/2 = 3x1/4x2 = 3/8

d)  14/5 x 2/7 x 49/6 = (14 x 2 x 49)/(5 x 7 x 6) = 1372/210
Simplificando:
1372/210 = 686/105

e) (13/49) / (39/14)
Multiplica o segundo invertido: (13/49)x(14/39) = (13x14)/(49x39)
                                                       182/1911

f) (14/3) / ( 2 1/3) = (14/3) / (7/3) = 14/3 x 3/7 = 14/7 = 2

g) 1/2 x 2 =2x1/2 = 2/2 = 1

h) (1/3)x 4 = 1x4 / 3 = 4/3

i) = 0