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
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