Question

Oblicz:

a) 1 2/5 + 1/4 =
b) 5 3/5 + 1 3/4 =
c) 4 2/3 - 2 2/7 =
d) 8 1/10 - 6 3/5 =
e) 18 * 5 2/3 =
f) 2 1/3 - 1 2/7 =
g) 4 1/6 : 13 =
h) 4 2/7 : 3 1/8 =
i ostatnie jeżeli rozwiążesz ostatnie prawdopodobnie dam ci naj :

( 2 5/6 - 1 1/2) * 2 1/4 - 1/6 =

Answer 1

A)1 2/5 + 1/4 = 1 8/20 + 5/20 = 1 13/20
b) 5 3/5 + 1 3/4 = 5 12/20 + 1 15/20 = 6 27/20 = 7 7/20
c) 4 2/3 - 2 2/7 = 4 14/21 - 2 6/21 = 2 8/21
d) 8 1/10 - 6 3/5 = 8 1/10 - 6 6/10 = 1 5/10
e) 18 * 5 2/3 = 180/3 = 60
f) 2 1/3 - 1 2/7 = 2 7/21 - 1 6/21 = 1 1/21
g) 4 1/6 : 13 = 25/6 * 1/13 = 25/78=
h) 4 2/7 : 3 1/8 =  30/7 : 25/8 = 30/7 * 8/25 = 240/175= 1 65/175

(2 5/6 - 1 1/2 ) * 2 1/4 - 1/6 = (17/6-9/6) * 9/4-1/6 = 8/6*9/4-1/6=27/8-1/6=81/24-4/24=77/24=  3 5/24