Respuesta :

lily735

Answer:

1.3d-2d =-17-8

1d=25

d=25/1

d=25

2.2n-5n=-10+7

-3n=-3

N= -3/-3

N=1

3.p+6p=13+15

7p=28

p=28/7

p=4

4. 3(y+7)

3y+21

2y+3=3y+21

2y-3y=21-3

-1y=18

y=18/-1

y=-18