Question

Resolva as expressões abaixo:


a) 2 x (3/5 + 1/7)


b) 3/5 x (2/5 + 1/2)


c) 1/2 x (2/3 - 1/6)


d) 3/7 x (1/4 - 1/6)


Me ajudem por favor

Answer 1

Boa noite!

Resposta:

a) 52/35

b) 27/50

c) 1/4

d) 1/28

Explicação passo a passo:

a) 2 . (3/5 + 1/7) = 2 . (21/35 + 5/35) = 2 . 26/35 = 52/35

b) 3/5 . (2/5 + 1/2) = 6/10 . (4/10 + 5/10) = 6/10 . 9/10 = 54/100 = 27/50

c) 1/2 . (2/3 - 1/6) = 1/2 (4/6 - 3/6) = 1/2 . 1/2 = 1/4

d) 3/7 . (1/4 - 1/6) = 3/7 . (3/12 - 2/12) = 3/7 . 1/12 = 3/84 = 1/28