Решите уравнения:

1) 0,6x+100=0,9x+1

2) - 9/14 x + 18 = - 2/3 x + 17

3) - 8/15 x - 11 = 4/9 x + 11

1) 0,6x + 100 = 0,9x + 1

100 - 1 = 0,9x - 0,6x

99 = 0,3x

x = 99/0,3 = 990/3 = 330

2) - 9/14*x + 18 = - 2/3*x + 17

2/3*x - 9/14*x = 17 - 18

(28x - 27x) / 42 = - 1

x/42 = - 1

x = - 1/42

3) - 8/15*x - 11 = 4/9*x + 11

-11 - 11 = 4/9*x + 8/15*x

-22 = (4*5x + 8*3x) / 45

20x + 24x = - 22*45

44x = - 22*45

2x = - 45

x = - 45/2