Question

Помогите пожалуйста

Answer 1

а = 2 7/19
b = 1 2/19
a+b = 2 7/19 + 1 2/19 = 3 9/19
a-b = 2 7/19 - 1 2/19 = 1 5/19

a = 6 7/15
b = 4 2/30
a+b = 6 7/15 + 4 2/30 = 6 7/15 + 4 1/15 = 10 8/15
a-b = 6 7/15 - 4 2/30 = 6 7/15 - 4 1/15 = 2 6/15