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 + 1100 - 1 = 0,9x - 0,6x99 = 0,3xx = 99/0,3 = 990/3 = 3302) -9/14*x + 18 = -2/3*x + 172/3*x - 9/14*x = 17 - 18(28x - 27x)/42 = -1x/42 = -1x = -1/423) -8/15*x - 11 = 4/9*x + 11-11 - 11 = 4/9*x + 8/15*x-22 = (4*5x + 8*3x)/4520x + 24x = -22*4544x = -22*452x = -45x = -45/2