Решите уравнение

4 (х-3) - 3 (х+2) = - 19

2,5 (4-2 х) - 5 (1-3 х) = 5

-5 (7-х_-4 (х-8) = 3

2/3 (3 х-1) - 1/9 (9 х-2 1/4) = 1/4

1) 4 (x-3) - 3 (x+2) = - 19

4x-12-3x-6=-19

x-18=-19

x=-19+18

x=-1

2) 2,5 (4-2x) - 5 (1-3x) = 5

10-5x-5+15x=5

5+10x=5

x=0

3) - 5 (7-x) - 4 (x-8) = 3

-35+5x-4 (-4) = 3

-35+5x+16=3

-19+5x=3

5x=22

x=22/5

x=4 2/5

4) 2/3 (3x-1) - 1/9 (9x-2 1/4) = 1/4

2x-2/3-1/9 (9x-1/2) = 1/4

2x-2/3-x+1/18=1/4

x-11/18=1/4

36x-36*11/18=36*1/4

36x-2*11=9

36x-22=9

36x=9+22

36x=31

x=31/36