Question

сделайте что обведено

Answer 1

х - 3/7 = 4/21
х = 4/21 + 3/7 = (4+9) / 21 = 13/21

4/5 - х = 1/6
х = 4/5 - 1/6 = (24-5) / 30 = 19/30

5/8 - х = 1/3
х = 5/8 - 1/3 = (15-8) / 24 = 7/24

Answer 2

чувак

Answer 3

2 нет