Jawabanmu

2014-09-02T20:08:30+07:00
5a+8 + (8a+3) = 13a + 11
6p -5q -25 +(-8p+6q+9r) = -2p +q +9r +25
2014-09-02T20:14:12+07:00
1. (5a + 8) + (8a + 3)
(5a + 8a) + (8 + 3) = 13a + 11
2. (6p - 5q - 25) + (-8p + 6q + 9r)
(6p + -8p) + (-5q + 6q) + -25 + 9r
-2p + q - 25 + 9r