Question

Помогите решить упражнение 870

Answer 1

a)
x = 3/5 - 1/8
x = 24/40 - 5/40
x = 19/40

б)
x = 5/12 - 1/3
x = 5/12 - 4/12
x = 1/12

в)
x = 1/5 + 3/20
x = 4/20 + 3/20
x = 7/20

г)
x = 4/21 + 3/7
x = 4/21 + 9/21
x = 13/21

д)
x = 4/5 - 1/6
x = 24/30 - 5/30
x = 19/30

е)
x = 5/8 - 1/3
x = 15/24 - 8/24
x = 7/24