To decide which is greater we have to make a common denominator, for example by multiplying numerator and denominator by the same number in one fraction. Then we can look only on numerator and decide easily.
[tex] \frac{2}{3} [/tex] = [tex] \frac{2*3}{3*3} [/tex] = [tex] \frac{6}{9} [/tex]
[tex] \frac{6}{9} \ \textless \ \frac{7}{9} [/tex] - it's the result
