1) - 2x+19=5x-16

2) 8x-25=3x+20

3) 6-y=3 (3-8)

4) 5 (y+1,2) = 7y+4

5) 4 (x-3) - 16=5 (x-5)

6) 3x-17=8x+18

7) 11-5y = 12-6y

8) 4y + (11,8-y) = 3,8-5y

9) 3x+16=8x-9

1) - 2x+19=5x-16

-2x-5x=-19-16

-7x=-35

x = - 35/-7

x = 5

2) 8x-25=3x+20

8x-3x=25+20

5x=45

x=45/5

x=9

3) 6-y=3 (3-8)

-y = + 6-15

-y = - 9 / : - 1

y=9

4) 5 (y+1,2) = 7y+4

5y+6=7y+4

5y-7y=-6+4

-2y=-2

y=1

Дальше по анологии

5) 4 (x-3) - 16=5 (x-5)

4 х-12-16=5 х-25

4x-28=5x-25

4x-5x=+28-25

-x=3 | : - 1

x = - 3

6) 3x-17=8x+18

7) 11-5y = 12-6y

8) 4y + (11,8-y) = 3,8-5y

9) 3x+16=8x-9