Question

найдите корни уравнений 9/5=6,3x/7 3,4/9=17x/4,5 1,5x/4=9/8

Answer 1

9/5=6,3x/7

6,3x * 5 = 9 * 7

31,5x = 63

x = 63 : 31,5

x = 2

3,4/9=17x/4,5

17x * 9 = 4,5 * 3,4

153x = 15,3

x = 15,3 : 153

x = 0,1

1,5x/4=9/8

1,5x * 8 = 9 * 4

12x = 36

x = 36 : 12

x = 3