Question

Efetue as multiplicações:

a) (1/4.3/5).2/7= b)(2-¼).(-2/3)=

c)(-3/4).(+1/5).(-1/2)= D)4.(1-7/5)=

e)(-3/5).(-2).(7/5)=

f)(1-4/5).(1-⅓

Quero cálculo e o cálculo reto

Answer 1

resolvi as questões no papel
e anexo

Answer 2

Olá, boa noite ☺

Resoluções:

a)

(1/4 x 3/5) x 2/7
3/20  x 2/7 = 6/140 : 2/2 = 3/70

b)

(2/1-1/4).(-2/3)
(8-1)/4.(-2/3)
7/4 . ( -2/3) = -14/12 : 2/2= -7/6

c)

(-3/4).(+1/5).(-1/2)
(-3/20).(-1/2)= 3/40

d)

4.(1/1-7/5)
4. (5-7)/5
4/1.(-2/5)= -8/5

e)

(-3/5).(-2/1).(7/5)
(6/5).(7/5)=42/25

f)

(1/1-4/5).(1/1-1/3)
(5-4)/5.(3-1)/3
1/5 . 2/3 = 2/15

Bons estudos :)