pake yng dikerjakn yan b klo bisa c

B. 1 1 1
--- + -- × ---
5. 2 10

= 1 1
--- + ---
5 20

= 1×4 1
------ + ----
5×4 20

= 4. 1
--- + ----
20 20

= 5

Semoga membantu

Mapel : Matematika
Bab: Pecahan

b)
dahulukan perkalian

1/5 + 1/2 × 1/10
= 1/5 + (1/2 × 1/10)
= 1/5 + 1/20
= ______/20
= 4/20 + 1/20
= 5/20
= 1/4

c)
Dahulukan Yang dikurung

1/5 : (1/2 - 1/10)
= 1/5 : (_____/10)
= 1/5 : (5/10 - 1/10)
= 1/5 : 4/10
= 1/5 × 10/4
= 10/20
= 1/2