Question

решите уравнения 2 целых 1/7 : X = 2,5; X - 8 целых 7/9 = 5/18

Answer 1

2 1/7:х=2,5
15/7:х=5/2
х=15/7:5/2
х=6/7

х-8 7/9=5/18
х=5/18+8 7/9
х=5/18+8 14/18
х=8 19/18
х=9 1/18