Question

1°)calcule o resultado das operações e simplifique quando for possível.

a)2/9 + 5/9
b)5/6 - 2/6
c)3/4 + 1/5
d)7/8 - 4/9
e)1/7 + 3/5 + 9/14
f)7 + 2/9
g)1 2/11 + 7/10
h)2 1/5 - 1 1/6
i)7 + 2/9
j)3/4 - 1/6
k)1/5 + 2 + 7/8
l)3 2/3 - 1/7

Answer 1

Resposta:

A) 7/9

B)3/6

C)19/20

D)31/72

E) 97/70

F)1

G)197/110

H)71/30

I) 1

J)7/12

K)123/40

L) 221/21

A) 2+5/9

=7/9

B) 5-2/6

=3/6

C) 3/4+1/5

=15+4/20                     em todos tem que tirar o mmc

=19/20

D) 7/8-4/9

=63-32/72

=31/72

E) 10+42+45/70    

=97/70

F)7+2/9

=9/9

=1

G)12/11+7/10

=120+77/110

=197/110

H) 126-55/30

=71/30

I)9/9

=1

J)18-4/24

=14/24     divide 2

=7/12

K) 1/5+2/1+7/8

= 8+80+35/40

=123/40

L)32/3-1/7

=224-3/21

=221/21

Answer 2

A) 2+5/9

=7/9

B) 5-2/6

=3/6

C) 3/4+1/5

=15+4/20 em todos tem que tirar o mmc

=19/20

D) 7/8-4/9

=63-32/72

=31/72

E) 10+42+45/70

=97/70

F)7+2/9

=9/9

=1

G)12/11+7/10

=120+77/110

=197/110

H) 126-55/30

=71/30

I)9/9

=1

J)18-4/24

=14/24 divide 2

=7/12

K) 1/5+2/1+7/8

= 8+80+35/40

=123/40

L)32/3-1/7

=224-3/21

=221/21