Question

Выполните действие. а)1/2+1/4;б)2/3-4/9.

Answer 1

а) $frac{1}{2} + frac{1}{4} = frac{2}{4} + frac{1}{4} = frac{3}{4}$
б) $frac{2}{3} - frac{4}{9} = frac{6}{9} - frac{4}{9} = frac{2}{9}$

Answer 2

1/2+1/4=2/4+1/4=3/4
2/3-4/9=6/9-4/9=5/9