Jawabanmu

Jawaban paling cerdas!
2014-02-16T16:19:26+07:00
A.
5y-7=2y+8
5y-2y=8+7
y=15/3
y=5
b.
3y-15+2=y+7
3y-y=13+7
y=20/2
y=10
2 5 2
2014-02-16T16:20:03+07:00
A) 5y-2y=8+7 3y=15 3y:3=15:3 y=5 b) 3(y-5)+2=y+7 3y-15+2=y+7 3y-y=7+15-2 2y=20 2y:2=20:2 y=10