Question

Oblicz
a) 5 - 4 5/6 + 2 1/8
b) 7 3/4 - 2,2 - (3 1/2 - 1,8 + 5 1/4

Answer 1

A) 1/6 + 2 1/8 = 4/24 + 2 3/24 = 2 7/24
b) 7 15/20 - 2 4/20 - 3 10/20 - 1 16/20 + 5 5/20 = 5 11/20 - 3 10/20 - 1 16/20 + 5 5/20 =
2 1/20 - 1 16/20 + 5 5/20 = 5/20 + 5 5/20 = 5 10/20 = 5,5

Answer 2

  5-4 5/6+ 2 1/8= 5- 4 20/24+ 2 3/24= 4 24/24-4 20/24+ 2 3/24= 4/24+2 3/24= 2 7/24
7 3/4-2,2-(3 1/2-1,8+5 1/4)= 7,75-2,2-(3,5-1,8+5,25)=7,75+2,2-6,95=3