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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 5: tìm y y + y x 1/3 : 2/9 +y :7/2=660

Tháng Ba 28, 2023 Toán học 0 Comments 0 views

Toán Lớp 5: tìm y
y + y x 1/3 : 2/9 +y :7/2=660

Comments ( 2 )

  1. mocmien87
    mocmien87
    28 Tháng Ba, 2023 at 2:42 sáng
    Reply
    Trả lời:
    y+yxx 1/3 : 2/9+y : 7/2=660
    =>yxx1+yxx(1/3:2/9)+yxx2/7=660
    =>yxx1+yxx3/2+yxx2/7=660
    =>yxx(1+3/2+2/7)=660
    =>yxx39/14=660
    =>y=660: 39/14
    =>y=9240/39=3080/13
    $\text{Vậy}$ y=3080/13

  2. hienchaudiem
    hienchaudiem
    28 Tháng Ba, 2023 at 2:41 sáng
    Reply
    y + y xx 1/3 : 2/9 +y :7/2=660
    y xx1+y xx3/2+y xx2/7=660
    y xx(1+3/2+2/7)=660
    y xx39/14=660
    y=660:39/14
    y=3080/13

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222-9+11+12:2*14+14 = ? ( )

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