0,75 x 1/13 + 3/4 x 5/13 + 75% x 7/13

0 bình luận về “0,75 x 1/13 + 3/4 x 5/13 + 75% x 7/13”

1. `0,75 xx 1/13 +3/4 xx 5/13 + 75% xx 7/13` 

   `=  3/4 xx 1/13 + 3/4 xx 5/13 + 3/4 xx 7/13`

   `= 3/4 xx (1/13 +5/13 +7/13)` 

   `= 3/4 xx  13/13`

   `= 3/4 xx 1`  

   `= 3/4`

    

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2. Đáp án + Giải thích :

      `0,75` x `1/13` + `3/4` x `5/13` + `75%` x `7/13`

   = `75/100` x `1/13` + `75/100` x `5/13` + `75/100` x `7/13`

   = `75/100` x ( `1/13` + `5/13` + `7/13` )

   = `75/100` x `1`

   = `75/100` `= 0,75`

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