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Question

5/9 : (1/11 - 5/22) + 5/9 : (1/15 - 2/3)

làm hai cách nha

 

Answer 1

Chúc bạn học tôt!!!

Comments

cảm ơn bn nhìu lắm

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You're welcome!

Answer 2

C1: 5/9 : (1/11 - 5/22) + 5/9 : (1/15 - 2/3)

= ( 5/9 : -3/22 ) + ( 5/9 : -3/5 )

= -110/27 + ( -25/27 )

= -135/27 = -5

C2: 5/9 : (1/11 - 5/22) + 5/9 : (1/15 - 2/3)

= 5/9 : ( 2/22 - 5/22 ) + 5/9 : ( 1/15 - 10/15 )

= 5/9 : -3/22 + 5/9 : -9/15

=5/9 . -22/3 + 5/9 . -5/3

= 5/9 . ( -22/3 + -5/3 ) = 5/9 . 27/3 = 5/9 . -9/1 = -5