Question

Urgente!!!
Calcule o valor das expressões:

Answer 1

a) 5/4+3/5÷6/5=25+12/20=37/20÷5/6=185/120.
b)7/4.(-3/5)+17/20=-21/20+17/20=-21+17/20=-4/20=--1/5
c)5/4+3/5÷6/5=25+12/20=37/20÷5/6=185/120.

Answer 2

A)25+12/20:6/5
    37/20X5/6
    185/120
 SIMPLIFICANDO POR 5
  37/24
B)-21/20+17/20
     -4/20
SIMPLIFICANDO POR 5
  -1/5
C)É A MESMA CONTA DA LETRA A