Question

Calcule

2/5 + 1/3 =

3/7 - 1/2 =

-{}-​

Answer 1

a)

$\frac{2}{5} + \frac{1}{3} = \\ \frac{6}{15} + \frac{5}{15} = \\ \frac{11}{15}$

b)

$\frac{3}{7} - \frac{1}{2} = \\ \frac{6}{14} - \frac{7}{14} = \\ \frac{ - 1}{14}$