Question

Oblicz:

a) 3/4 + 2/5 =
b) 1/2 - 3/8 =
c) 11/12 = 13/18 =
d) 5/6 - 7/15 =
e) 2 i 1/2 + 7 i 1/5 =
f) 6 i 7/12 + 2 i 13/15 =
g) 10 i 3/4 - 8 i 5/12 =
h) 3 i 1/6 - 1 i 5/8 =
i) 4 i 5/12 - 2 i 17/30 =
j) 6 i 3/4 + 7/8 + 5 i 1/2 =
k) 8 i 2/3 + 1 i 1/12 - 5/8 =
l) 12 i 3/4 - 1/8 - 2 i 3/5 =

Answer 1

A) 3/4 + 2/5 =23/20
b) 1/2 - 3/8 =1/8
c) 11/12 = 13/18 =7/36
d) 5/6 - 7/15 =11/30
e) 2 i 1/2 + 7 i 1/5 =9      7/10
f) 6 i 7/12 + 2 i 13/15 =9      9/20
g) 10 i 3/4 - 8 i 5/12 =2   1/3
h) 3 i 1/6 - 1 i 5/8 =1  13/24
i) 4 i 5/12 - 2 i 17/30 =1   17/20
j) 6 i 3/4 + 7/8 + 5 i 1/2 =13      1/8
k) 8 i 2/3 + 1 i 1/12 - 5/8 =9   1/8
l) 12 i 3/4 - 1/8 - 2 i 3/5 =10      1/40