Question

Efetue a) 2/3 + 5/7 b) 8/7 + 5/3 c) 5/4 - 10/9 d) 1 + 2/7 e) 3/7 • 9/3 f) 2•3/4 ??

Answer 1

a) 2/3 + 5/7 = 14/21 + 15/21 = 29/21

b) 8/7 + 5/3 = 24/21 + 35/21 = 59/21

c) 5/4 - 10/9 = 45/36 - 40/36 = 5/36

d) 1 + 2/7 = 7/7 + 2/7 = 9/7

e) 3/7 . 9/3 = 27/21

f) 2 . 3/4 = 6/4