Jawabanmu

2014-01-26T18:53:48+07:00
10y + 10 =  5y + 25
=10y-5y+10-25
=5y-15
2014-01-26T19:34:07+07:00
10y +10 = 5y+ 25
10y-5y = 25-10
5y = 15
y = 15/5
y= 3
itu jawaban saya