8/9-2/5=bagaimana ya cara pengerjaannya mohon dibantu ya mksh.

[tex] \frac{8}{9} - \frac{2}{5} \\ = \frac{40}{45} - \frac{18}{45} \\ = \frac{22}{45} [/tex]

8/9 = 40/45
2/5 = 18/45

40/45 - 18/45 =22/45