Question

Fie:a= \frac{2}{3} + \frac{1}{2} ; b=1 -\frac{1}{3} ;c \frac{1}{3} + \frac{4}{9} Aratati ca a*b=c

Answer 1

$\displaystyle a= \frac{2}{3} + \frac{1}{2} = \frac{4+3}{6} = \frac{7}{6} \\ \\ b=1 -\frac{1}{3}= \frac{3-1}{3} = \frac{2}{3} \\ \\ c= \frac{1}{3} + \frac{4}{9} = \frac{3+4}{9} = \frac{7}{9} \\ \\ a \cdot b= \frac{7}{6} \cdot \frac{2}{3} = \frac{14}{18} = \frac{7}{9}$