Question

VA ROG DAU COROANA!!!

Answer 1

Inmultim pe diagonala si obtinem
4x = 3*12
4x = 36
x = 36/4
x = 9

Answer 2

$\frac{x}{12} =\frac{3}{4} \\ \\ x =\frac{12 * 3}{4}\\\\ x =\frac{36}{4} \\\\ x = 9$