Jawabanmu

2014-01-22T20:37:38+07:00
2/6a+9 = 5/6a-30
12a-60 = 30a+45
-105 = 18a
a= -105/18
Jawaban paling cerdas!
2014-01-22T20:45:34+07:00
 \frac{2}{3} (2a+3)= \frac{5}{6} (a-5)

 \frac{4a+6}{3} =  \frac{5a-25}{6}

3(5a-25)=6(4a+6)

15a-75=24a+36

15a-24a=36+75
-9a=111
a=111/-9