Question

Oblicz(napisać całe obliczenie):
a)1/6 + 2/5 =
b)8/9 - 5/6 =
c)1 1/5 + 8 1/7 =
d)4 7/10 - 2 1/3 =
e)4 1/5 - 2 3/4 =
f)6 1/8 - 2 3/4 =
g)10 2/3 - 6 7/9 =
h)8 3/8 - 2 5/6 =

Answer 1

a)1/6 + 2/5 = 5/30 + 12/30 = 17/30
b)8/9 - 5/6 = 16/18 - 15/18 = 1/18
c)1 1/5 + 8 1/7 = 6/5 + 57/7 = 42/35 + 285/35 = 327/35 = 9 12/35
d)4 7/10 - 2 1/3 = 47/10 - 7/3 = 141/30 - 70/30 = 111/30 = 3 21/30
e)4 1/5 - 2 3/4 = 21/5 - 11/4 = 84/20 - 55/20 = 29/20 = 2 9/20
f)6 1/8 - 2 3/4 = 49/8 - 11/4 = 49/8 - 22/8 = 27/8 = 3 3/8
g)10 2/3 - 6 7/9 = 32/3 - 61/9 = 96/9 - 61/9 = 35/9 = 3 8/9
h)8 3/8 - 2 5/6 = 67/8 - 17/6 = 201/18 - 68/18 = 133/18 = 7 7/18

Answer 2

A)1/6 + 2/5 =17/30
b)8/9 - 5/6 =1 13/18
c)1 1/5 + 8 1/7 =9 12/35
d)4 7/10 - 2 1/3 =2 11/30
e)4 1/5 - 2 3/4 =1 9/20
f)6 1/8 - 2 3/4 =3 3/8
g)10 2/3 - 6 7/9 = 3 8/9
h)8 3/8 - 2 5/6 =5  13/24