Question

Me ajudem a responder pfv

Answer 1

Resposta:

c) 23/60; 2a) -3/40; b) -36/125.

Explicação passo-a-passo:

c) (1/5) - 7/12 =

igualando os denominadores:

12/60 - 35/60 =

23/60.

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

-3/16 . 2/5 =

-6/80 = -3/40.

b) (-9/10) . (4/5) . (2/5) =

-36/50 . 2/5 =

-72/250 =

-36/125.