Question

Oblicz

a) 3/5 -1 2/3=

b)2 2/9+1 5/12=

c)1 1/7+ 2 2/3=

d)3 2/5-5 2/3=

e)4 1/6-2 7/15=

f)1 1/6-1/9=

Answer 1

a) 3/5 -1 2/3= 3/5 - 5/3 = 9/15 - 25/15 = -16/15 = - 1 i 1/15

b)2 2/9+1 5/12= 20/9 + 17/12 = 80/36 + 51/36 = 131/36 = 3 i 23/36

c)1 1/7+ 2 2/3= 8/7 + 8/3 = 24/21+56/21 = 80/21 = 3 i 17/21

d)3 2/5-5 2/3= 17/5 - 17/3 = 51/15 - 85/15 = -34/15 = -2 i 4/15

e)4 1/6-2 7/15= 25/6 - 37/15 = 125/30 - 74/30 = 51/30 = 1 i 21/30

f)1 1/6-1/9= 7/6 - 1/9 = 21/18 - 2/18 = 19/18 = 1 i 1/18