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5,25 = 5 1/4 = 21/4
3 3/7 = 24/7
7,5 = 7 1/2 = 15/2
3 3/8 = 27/8
Kemudian kita dahulukan pembagian lalu perkalian dan kemudian pengurangan
= 21/4 x 24/7 - (15/2 : 27/8)
= 21/4 x 24/7 - (15/2 x 8/27)
= (21/4 x 24/7) - 120/54
= 504/28 - 120/54
= 27216/1512 - 3360/1512
= 23856/1512
= 2982/189
= 994/63
= 15 49/63
= 15 7/9