B) (1/3 - 1/4) : (2/5-1/10) C) (2/7 ×1/4 ):(3/4 - 1/5 D) (2 -1/3)×(3/4:5/6
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B) (1/3 - 1/4) : (2/5 - 1/10)
(4/12 - 3/12) : (4/10 - 1/10)
(1/12) : (3/10)
10/36 = 5/18
C: (2/7 x 1/4) : (3/4 - 1/5)
(2/28) : (15/20 - 4/20)
(2/28) : (11/20)
40/308 = 10/77
D: (2 - 1/3) x (3/4 : 5/6)
(6/3 - 1/3) x (18/20)
5/3 x 18/20
90/60 = 3/2
(4/12 - 3/12) : (4/10 - 1/10)
(1/12) : (3/10)
10/36 = 5/18
C: (2/7 x 1/4) : (3/4 - 1/5)
(2/28) : (15/20 - 4/20)
(2/28) : (11/20)
40/308 = 10/77
D: (2 - 1/3) x (3/4 : 5/6)
(6/3 - 1/3) x (18/20)
5/3 x 18/20
90/60 = 3/2
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