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

Toán Lớp 4: bài 10: Tìm y biết ( y+1 )+ ( y+2 )+( y+3 ) +( y+4 )+ ( y+5 ) = 45

Toán Lớp 4: bài 10: Tìm y biết
( y+1 )+ ( y+2 )+( y+3 ) +( y+4 )+ ( y+5 ) = 45

Comments ( 2 )

  1. (y+1)+(y+2)+(y+3)+(y+4)+(y+5)=45
    =y+1+y+2+y+3+y+4+y+5=45
    =5y+(1+2+3+4+5)=45
    5y+15=45
    5y=45-15
    5y=30
    y=30:5
    y=6
    @ananhlan123456
    #Hoidap247
     

  2. (y+1)+(y+2)+(y+3)+(y+4)+(y+5)=45
    =y+1+y+2+y+3+y+4+y+5=45
    =5y+(1+2+3+4+5)=45
    5y+15=45
    5y=45-15
    5y=30
    y=30:5
    y=6
     

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

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