Jawabanmu

2014-04-24T18:42:41+07:00
3y+15 = 135
3y = 135-15
3y = 120
y = 40 derajat
1 5 1
2014-04-24T19:43:47+07:00
3y + 15 = 135 3y = 135 - 15 3y = 120 y = 120 : 3 y = 40