Question

A) 1 1/5 • 1 2/3 • 1/7 + (1 1/7)2 - potęgowanie=
b) (2 1/6 - 2/3)2 - potęgowanie - 2 1/5 =
c) 10 - 2 • (3 1/5 - 2 1/4 • 1/3) =
d) (7/3 - 5/12 + 1 1/2) : (2 3/4 - 5/6)=

Answer 1

b) (2 1/6 - 2/3)^2  - 2 1/5 =(13/6 - 4/6)^2 - 11/5 = (9/6)^2 - 11/5 = (3/2)^2 - 11/5 =     = 9/4 - 11/5 = 45/20 - 44/20 = 1/20

c) 10 - 2 • (3 1/5 - 2 1/4 • 1/3) = 10 - 2*(16/5 - 9/4 * 1/3) = 10 - 2*(16/5 - 3/4) =          = 10 - 2 * (64/20 - 15/20) = 10 - 2 * 49/20 = 10 - 49/10 = 10 - 4,9 = 5,1

d) (7/3 - 5/12 + 1 1/2) : (2 3/4 - 5/6)=(28/12 - 5/12 + 18/12) : ( 11/4 - 5/6) =              = 41/12 : (33/12 - 10/12) = 41/12 : 23/12 = 41/12 * 12/23 = 41/23 = 1 18/23