Question

решите уравнение
1) 5/6 = 15/2x - 3
2) 12 : 4/5x = 20 : 1/4

Answer 1

1) 5/6 = 15/2x - 3=5/6=15/2х-3

5(2х-3)=15*6

10х-15=90

10х=105

х=10,5

2) 12:4/5х = 20 1/4

12*5х/4 = 20*4/1

60*х/4 = 80

60х = 320

х=16/3

х=5 1/3