Hasil variabel (2p+q) (p-4q)

jawab
<=>(2p+q) (p-4q)=3p-5q

semoga membantu:)

Eliminasi Persamaan 1 dan 2
2p - q = -18 x3 6p - 3q = -54
3p + 4q = -16 x2 6p + 8q = -32
5p = -86
p = -86/5
p = 17,2
subtitusi
2p - q = -18
2(17,2) - q = -18
34,4 - q = -18
- q = -18 - 34,3
q = 52,3
jadi p + q = 17,2 + 52,3
= 69,5