Question

12/4 -1/2 porfiiiiiis

Answer 1

$\frac{12}{4} - \frac{1}{2} = \frac{4:4.12-4:2.1}{4} = \frac{12-2}{4} = \frac{10}{4} = \frac{5}{2}$

Answer 2

$\frac{12}{4} - \frac{1}{2} = \frac{12-2}{4} = \frac{10}{4}$