Question

Determine o valor das expreçoes
a) (-4/5) :(+8/5)-(+2) ×(-5/4)
b) (-1,44):(-2,4)+(0,18):(-1,2)
​

Answer 1

a) 2

b) 9/20

a) (-4/5) :(+8/5)-(+2) ×(-5/4)

-4/5×5/8+10/4

-4/5×5/8+5/2

-4+1/8+5/2

-4/8+5/2

-1/2+5/2

4/2

2

b) (-1,44):(-2,4)+(0,18):(-1,2)

(-36/25):(-12/5)+(9/50)+(-6/5)

36/25×5/12-9/50×5/6

3/25×5-9/10×1/6

3/5-3/10×1/2

3/5-3/20, MMC = 20

12/20-3/20

9/20

Ótimo dia ❤️❤️❤️

05/10/22