Решите уравнения

1.3 (y-5) - 2 (y-4) = 8

2.-5 (5-x) - 4x=18

3.3 (2x+8) - (5x+2) = 0

4.-3 (y+4) + 4 (2y-1) = 0

3.8 (3-2x) + 5 (3x+5) = 9

3 (y-5) - 2 (y-4) = 8

у-5-2 у+8=8

-у=8-8+5

у=-5

2.-5 (5-x) - 4x=18

-25+5 х-4 х=18

х=18+25

х=43

3.3 (2x+8) - (5x+2) = 0

6 х+24-5 х-2=0

х+22=0

х=-22

4.-3 (y+4) + 4 (2y-1) = 0

-3 у-12+8 у-4=0

5 у-16=0

5 у=16

у=16/5

у=3,2

3.8 (3-2x) + 5 (3x+5) = 9

24-16 х+15 х+25=9

49-х=9

х=49-9

х=40