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2p-q=-18|×4|8p-4q=-72
3p+4q=-16
8p-4q=-72
________ +
11p = -88
11p÷11= -88÷11
p = -8
2p-q=-18
2(-8)-q=-18
-16-q=-18
-16+16-q=-18+16
-q=-2
-q÷-1=-2÷-1
q=2
p+q=-8+2=-6
3p + 4q = -16 [kali 1]
2p - q = -18 [kali 4]
eliminasi q
3p + 4q = -16
8p - 4q = -72
__________ +
11p = -88
p = -88/11
P = -8
nilai p = -8
3p + 4q = -16 [kali 2]
2p - q = -18 [kali 3]
eliminasi p
6p + 8q = -32
6p - 3q = -54
__________ -
8q - (-3q) = -32 -(-54)
8q + 3q = -32 + 54
11q = 22
q = 22/11
q = 2
nilai q = 2
jadi ,
p + q
=> -8 + 2
=> -6
"maaf kalau salah"