Answer:
p=3 and p=-1
Explanation:
1) 7=1+2p
Subtract 1 on both sides to isolate x.
7=1+2p
-1 -1
6=2p
Divide both sides by 2.
6=2p
/2 /2
3=p
2) -3p+5=8
Subtract 5 on both sides to isolate x.
-3p+5=8
-5 -5
-3p=3
Divide both sides by -3.
-3p=3
/-3 /-3
p=-1
Hope this helps...have a wonderful day C: