4 1/20 ( 2/3 ) mũ 2 + ( 0,8 – 8/15 ) : -4/7

1 bình luận về “4 1/20 ( 2/3 ) mũ 2 + ( 0,8 – 8/15 ) : -4/7”

1. 4 1/20 ( 2/3 )^2 + ( 0,8 – 8/15 ) : -4/7

   =81/20. 4/9 + ( 0,8 – 8/15 ) : -4/7

   =81/20. 4/9 + 4/15 : -4/7

   =9/5 + 4/15 : -4/7

   =9/5 + 4/15 . 7/-4

   =9/5 + -7/15

   =27/15 + -7/15

   = 4/3

   @Lynacute

    

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