Решите уравнения : 1)0,2+1/5х=0,4х-1/15 2)1/2х-1/3=5/9+1/6х 3)2,25х- 1 1/3 =-3-1/4х

1)0,2+1/5х=0,4х-1/15
2/10 + 2/10х = 4/10х - 1/15
2/10 + 1/15 = 4/10х - 2/10х
6/30 + 2/30 = 2/10х
8/30 = 2/10х
х = 8/30 : 2/10
х = 8/30 * 10/2
х = 5 * 8/30
х = 40/30
х = 4/3
х = 1 1/3

2)1/2х-1/3=5/9+1/6х
1/2х - 1/6х = 5/9 + 1/3
3/6x - 1/6x = 5/9 + 3/9
2/6x = 8/9
x = 8/9 : 2/6
x =8/9 * 6/2
x = 3 * 8/9
x = 8 * 3/9
x = 8 * 1/3
x = 8/3
x = 2 2/3

3)2,25х - 1 1/3 = -3 -1/4х
2,25х - 4/3 = -3 -0,25х
2,25х + 0,25x = -3 + 4/3
2,5x = - 9/3 + 4/3
2,5x = -5/3
x = -5/3 : 2,5
x = -5/2,5 : 3
x = -50/25 : 3
x = -2 : 3
x = -2/3