Question

Oblicz.Pomocy:)
a)5/6+3/5
b)23 i 2/3+5 i 7/9
c)2 i 5/12 + 3/8
d) 5 i 7/18 + 2 i 5/6
e)4/7-1/3
f)6 i 5/12 -4 i 5/6
g) 4 i 2/7 - 2
h)3 i 1/3 - 2/5

Answer 1

A) 5/6+3/5 = 25/30+18/30 = 43/30 = 1 13/30
b) 23 2/3+5 7/9 = 71/3+52/9 = 213/9+52/9 = 265/9 = 29 4/9
c) 2 5/12+3/8 = 29/12+3/8 = 58/24+9/24 = 67/24 = 2 19/24
d) 5 7/18+2 5/6 = 97/18+17/6 = 97/18+51/18 = 148/18 = 8 4/18
e) 4/7-1/3 = 12/21-7/21 = 5/21
f) 6 5/12-4 5/6 = 77/12-29/6 = 77/12-58/12  = 19/12 = 1 7/12
g) 4 2/7-2 = 30/7-2 = 30/7-14/7 = 16/7 = 2 2/7
h) 3 1/3-2/5 = 10/3-2/5 = 50/15-6/15 = 44/15 = 2 14/15