Question

Помогите пожалуйста

Answer 1

= (6/21+ 5/21) : 11/7 = 11/21 : 11/7 = 1/3
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№2
= (16/22 + 3/22) : 5/11 = 19/22 : 5/11 = 19/10 = 1  9/10
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№3
= 19/12 : (9/24 + 10/24) = 19/12 : 19/24 = 2
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№4 
= 17/36 : (21/36 - 20/36) = 17/36 : 1/36 = 17
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№ 5
= (3/14 + 10/14) : 26/7 = 13/14 : 26/7 = 1/4
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№6
= 19/24 : (9/48 + 10/48) = 19/24 : 19/48 = 2