Решите уравнение и сделайте проверку

1) 1/x+ 3/2 2/5*x = 3/4, x ≠ 0

1/x + 3/12/5x = 3/4

1/x + 3/12x/5 = 3/4

1/x + 5/4x=3/4

9/4x=3/4

36=12x

12x=36

x=3, x ≠ 0

x = 3

2) 1/x - 2/ 4 2/3x = 2/7 , x ≠ 0

1/x - 2/14/3 x = 2/7

1/x - 2/14x/3 = 2/7

1/x - 3/7x = 2/7

4/7x = 2/7

28 = 14x

14x = 28

x = 2 , x ≠ 0

x=2

3) 6/ 3 1/3x + 1/x = 2/5 , x ≠ 0

6/10/3 x + 1/x = 2/5

6/10x/3 + 1/x = 2/5

9/5x + 1/x = 2/5

14/5x = 2/5

70 = 10x

10x = 70

x = 7 , x ≠ 0

x = 7