Pake caranya yg nmor 2

2. a. 216*(2/3)=72*2=144
    b. [tex]81 \frac{3}{4}= \frac{81}{1}* \frac{3}{4}= \frac{81*3}{1*4}= \frac{243}{4}=60 \frac{3}{4} [/tex]
    c. (??)
    d.