Answer :
Answer:
p=5
Step-by-step explanation:
3 + 2(p+4)=21
Subtract 3 from each side
3-3 + 2(p+4)=21-3
2(p+4)=18
Divide by 2
2/2(p+4)=18/2
p+4 = 9
Subtract 4 from each side
p+4-4 = 9-4
p=5
Answer :P=5
Explanation :
3+2p+8=21 calculate
11+2p=21
2p=21-11 subtract
2p=10 divide
P=5
Explanation :
3+2p+8=21 calculate
11+2p=21
2p=21-11 subtract
2p=10 divide
P=5