P = 8
S=15
System-
Equation 1: 2p + 4s = 76
Equation 2: p + 3s = 53
Solve by elimination.
2p + 4s = 76
-2(p + 3s) = 53
Equation 2 turns into -2p - 6s = -106
2p + 4s = 76
-2p - 6s = -106
Combine alike terms
-2s = -30
s = 15
Use one of the original equation and plug āsā in.
p + 3(15) = 53
p + 45 = 53
p= 8