Jumlahkanlah 5p + 3q – 7 dan -2p – 5q – 3

5p+3q-7+(-2p-5q-3)
= 5p+3q-7-2p-5q-3
=(5-2)p+(3-5)q+(-7-3)
= 3p-2q+(-10)
= 3p-2q-10

(5p+3q-7)+(-2p-5q-3)
(5p-2p+3q-5q-7-3)
(3p-2q-10)