Jawabanmu

2014-09-03T20:49:28+07:00
3+2-2p = 15
5-2p = 15
5-15 = 2p
-10 = 2p
-10 : 2 = p
-5 = p
2014-09-03T20:50:07+07:00
3 - (-2) - 2p = 3 x 5
3 + 2 - 2p = 15
5 - 2p = 15
-2p = 15 - 5
-2p = 10
p = 10 : -2
p = -5