14 (2x-3) - 5 (x+4) = 2 (3x+5) + 5x

9 (3x-7) + 3 (8x-11) = 3 (9x+8)

6 (7x-11) - 13 (x-6) = 14 (2x+1)

14 (2 х-3) - 5 (х+4) = 2 (3 х+5) + 5 х

28 х-42-5 х-20=6 х+10+5 х

23 х-62=11 х+10

23 х-11 х=10+62

12 х=72

х=72:12

х=6

9 (3 х-7) + 3 (8 х-11) = 3 (9 х+8)

27 х-63+24 х-33=27 х+24

51 х-96=27 х+24

51 х-27 х=24+96

24 х=120

х=5

6 (7 х-11) - 13 (х-6) = 14 (2 х+1)

42 х-66-13 х+78=28 х+14

29 х+12=28 х+14

29 х-28 х=14-12

х=2