Jawabanmu

2014-06-08T14:29:27+07:00
Inget rumus dasarnya yaaa

S(tak hingga) =  \frac{a}{1-r}  \\
 \frac{3}{4}= \frac{a}{1- \frac{1}{3} } \\  \frac{3}{4}= \frac{a}{ \frac{2}{3} } \\  \frac{3}{4}= \frac{3a}{2} \\ 3a= \frac{3.2}{4} \\ a= \frac{3.2}{4.3} \\ a= \frac{1}{2}