решите уравнения:

а) (5 х-3) + (7 х-4) = 8 - (15-11 х)

б) (4 х+3) - (10 х+11) = 7 + (13-4 х)

в) (7-5 х) - (8-4 х) + (5 х+6) = 8

г) (3-2 х) + (4-3 х) + (5-5 х) = 12+7 х

а) (5 х-3) + (7 х-4) = 8 - (15-11 х)

5x-3+7x-4=8-15+11x

12x-7=-7+11x

x=0

б) (4 х+3) - (10 х+11) = 7 + (13-4 х)

4x+3-10x+11=7+13-4x

-6x+14=20-4x

-2x=6

x=-3

в) (7-5x) - (8-4x) + (5x+6) = 8

7-5x-8+4x+5x+6=8

4x=3

x=0.75

г) (3-2x) + (4-3x) + (5-5x) = 12+7x

3-2x+4-3x+5-5x=12+7x

-17x=0

x=0