Question

a) (+3/5)+(-7/5)

b) (-3/2)+(+5/7)​

c(2/5) elevado a 2 + (-1/5) elevado a 3​

Answer 1

Explicação passo-a-passo:

a) 3/5 + (-7/5) =

3/5 - 7/5

- 4/5

b) -3/2 + 5/7

-21 + 10

__________. = -11/14 (Obs. tirei o MMC)

14

c) (2/5)² + (-1/5)³

(2/5).(2/5) = 4/25

(-1/5).(-1/5).(-1/5) = -1/125

4/25+(-1/125)

4/25 - 1/125=

20-1

19/125

Answer 2

Resposta:

a)(+3/5)+(-7/5)

-(7/5 - 3/5)

-(4/5)

-4/5

b)(-3/2)+(+5/7)

-(3/2 - 5/7)

-(21-10/14)

-(11/14)

-11/14

c)(2/5)² + (-1/5)³

(4/25) + (-1/125)

+(20-1/125)

+(19/125)

19/125