Question

Упростите выражение 2х/9у- х/12у

Answer 1

$\frac{2x}{9y} - \frac{x}{12y} = \frac{4*2x-3 x}{36y} = \frac{5x}{36y}$

Answer 2

$\frac{2x}{9y} - \frac{x}{12y} = \frac{2x*4}{9y*4} - \frac{x*3}{12y*3} = \frac{8x}{36y} - \frac{3x}{36y} = \frac{5x}{36y}$