Question

Qual pe o valo0r das expressões abaixo

A)- (1/2+1/5)-(2/4+2/10
B)- (1/2+1/5)+(2/4+2/10)
C)- (1/2-1/5)+2/4-2/10)

Answer 1

a) 0

b) 7/5

c) 3/5

a) (1/2+1/5)-(2/4+2/10) =

(5/10+2/10)-(10/20+4/20)

7/10-14/20

14/20-14/20

0

b) (1/2+1/5)+(2/4+2/10)

(5/10+2/10)+(10/20+4/20)

7/10+14/20

14/20+14/20

28/10 simplificando 7/5

c) (1/2-1/5)+(2/4-2/10)

(5/10-2/10)+(10/20-4/20)

3/10+6/20

6/20+6/20

12/20 simplificando 3/5

❤️❤️ Prontinho ❤️❤️

22/01/22