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5(2/3) - 2(3/4) 10/3 - 6/4
= 13/3
22/12
= 13/3 x 12/22 = 52/22 = 26/11
= (4/3 + 12/4) / (10/3 - 6/4)
= (42/12) / (22/12)
= 42/12 × 12/22
= 504/264
= 21/11