Question

a)7/8-2/8-1/8=

b)1/10+7/10-3/10=

c)7/15+3/15-1/10=

d)1/3+2/9+4/3=

por favor me ajuda​

Answer 1

Resposta:

Explicação passo a passo:

A)7/8-2/8-1/8=

= 5/8 - 1/8

= 4/8 (:4)/(:4)

= 1/2

________________

b)1/10+7/10-3/10=

= 8/10 - 3/10

= 5/10 (:5)/(:5)

= 1/2

_________________

c)7/15+3/15-1/10=

= 10/15 (:5)/(:5) - 1/10

= 2/3 - 1/10

Mmc (3,10)= 30

= (10.2 - 3.1)/30

= (20-3)/30

= 17/30

______________

d)1/3+2/9+4/3=

= 1/3 + 4/3 + 2/9

= 5/3 + 2/9

= (3.5 + 1.2)/9

= (15+2)/9

= 17/9