$\frac{2x - 1}{x - 1} - \frac{x - 2}{x - 1}.$ $\frac{2(2xy - 1)}{3x^2y^2} - \frac{xy - 2}{3x^2y^2}.$ $\frac{3x - 2}{x + 1} - \frac{2x - 1}{x + 1}.$

----- Nội dung ảnh -----
d)

$\frac{2x - 1}{x - 1} - \frac{x - 2}{x - 1}.$

e)

$\frac{2(2xy - 1)}{3x^2y^2} - \frac{xy - 2}{3x^2y^2}.$

f)

$\frac{3x - 2}{x + 1} - \frac{2x - 1}{x + 1}.$

2x−1x−1−x−2x−1.\frac{2x - 1}{x - 1} - \frac{x - 2}{x - 1}. 2(2xy−1)3x2y2−xy−23x2y2.\frac{2(2xy - 1)}{3x^2y^2} - \frac{xy - 2}{3x^2y^2}. 3x−2x+1−2x−1x+1.\frac{3x - 2}{x + 1} - \frac{2x - 1}{x + 1}.