Jawabanmu

Jawaban paling cerdas!
2014-02-06T19:39:48+07:00
25 - 4y = 6y + 15
25 - 15 = 6y + 4y
10 = 10y
y = 10/10
y = 1
2 5 2
2014-02-06T19:42:24+07:00
25 - 4y = 6y + 15
4y-6y = 15 + 25
-2y = 40
y = 40/-2
y = -20
1 5 1