Jawabanmu

2014-02-19T18:08:21+07:00
H. 12 - 8y = 15 - 7y 12-12 -8y = 15-12 -7y -8y = 2 -7y -8y -7y = 2- 7y-7y -15y = 2 -15y/-15 = 2/-15 y = 2/-15 I. 3(2y-3) = 5(y-2) 6y - 9 = 5y - 10 6y -9 + 9 = 5y - 10 + 9 6y = 5y - 1 6y - 5y = 5y - 5y -1 y = -1