Question

preciso mtt por favor ​

Answer 1

Resposta:

a)0,3 b)2,0 c)1,25 d)2,833... e)0,777...

Explicação passo-a-passo:

a)+4/5 -1/2

mmc

2,5/2

1,5/5

1,1/10

__8-5__=+3

    10

3/10= 0,3

b)-2/3-6/2=

mmc

2,3/2

1,3/3

1,1/6

___4-18=__-12_

        6

-12/6=2,0

c)+3/4+1/2

mmc=8

__6+4_=10

     8

10/8=1,25

d)-2/6-5/2

mmc

6,2/2

6,1/3

3,1/3

1,1/12

__-4-30_=-34_

    12

-34/12=2,833...

e)1/9+2/3=

mmc=27

___3+18_=21__

      27

21/27=0,777...