Question

2p - 10q = -pq dan 2p+5q = 2pq, nilai 3p + 2q adalah........

Answer 1

2p - 10q = -pq
2p + 5q = 2pq
2p - 10q = -pq
4p + 10q = 4pq
6p = 3pq
p = 2pq
1/q = 2
q = 1/2

2p - 10q = -pq
2p - 10(1/2) = -p(1/2)
2p - 5 = -1/2p
5/2p = 5
p = 2

3p + 2q = 3(2) + 2(1/2) = 6 + 1 = 7