3p+2q=-5 dan 4 p+q=12

3p+2q = -5...1
4p+q = 12....2
eleminasi q
3p+2q=-5 - 2(4p+q=12)
3p+2q=-5 - 8p+2q=24
-5p = -29
p = 29/5

subs
3p+2q=-5
3.29/5 + 2q = -5
2q = -5 - 87/5
2q = -112/5
q = -112/5.2
q = -112/10
q= -11,2