Câu 1 : a , ( $\frac{4}{5}$ + $\frac{1}{2}$ ) × ( $\frac{3}{13}$ – $\frac{8}{13}$ ) b,

Question

Câu 1 :
a , ( $\frac{4}{5}$ + $\frac{1}{2}$ ) × ( $\frac{3}{13}$ – $\frac{8}{13}$ )
b,

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Diễm Thu 5 years 2021-05-20T14:36:21+00:00 2 Answers 21 views 0

Answers ( )

  1. Sigrid
    0
    2021-05-20T14:37:30+00:00
    Reply

    Đáp án:

     

    Giải thích các bước giải:

     =(8\10+5\10)x-5\13

    =13\10 x (-5)\13

    =-1\2

  2. thongdat2
    0
    2021-05-20T14:37:32+00:00
    Reply

    `a, ( 4/5 + 1/2 ) . ( 3/13 – 8/13 )`

    `= ( 8/10 + 5/10 ) . ( – 5/13 )`

    `= 13/10 . ( – 5/13 )`

    `= -1/2`

     

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