Respuesta :

wegnerkolmp2741o

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

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