5²/7 - 2 ¹/⁴ : 3 ¹/²

5 2/7 - 2 1/4 : 3 1/2
= 37/7 - 9/4 : 7/2
= 37/7 - 9/4 × 2/7
= 37/7 - 18/28
= 148/28 - 18/28
= 130/28
= 4 18/28
= 4 9/14

Semoga bisa membantu...