Реш уравнения

1) 4 (х-3) - 3 (х+2) = - 19

2) 2'5 (4-2 х) - 5 (1-3 х) = 5

3) - 5 (7-х) - 4 (х-8) = 3

4) 2/3 (3 х-1) - 1/9 (9 х-9/4) = 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-4+15x=5

5+10x=5

10x=0

x=0

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

-35+5x-4x+32=3

-3+x=3

x=3+3

x=6

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

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

2x-2/3-x=0

x-2/3=0

3x-3*2/3=3*0

3x-2=0

3x=2

x=2/3