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

Toán Lớp 6: Tìm y 95-5.(y+2)=45 15y – 133=17 4.(x+9)-5=55

Toán Lớp 6: Tìm y
95-5.(y+2)=45
15y – 133=17
4.(x+9)-5=55

Comments ( 2 )

  1. Giải đáp:
     
    Lời giải và giải thích chi tiết:
    a) 95 – 5 . ( y + 2 ) = 45
    5 . ( y + 2 ) = 95 – 45
    5 . ( y + 2 ) = 50
    y + 2 = 50 : 5
    y + 2 =  10
    y = 10 – 2
    y = 8
    b) 15y – 133 = 17
    15y = 17 + 133
    15y = 150
    y = 150 : 15
    y = 10
    4 . ( y + 9 ) – 5 = 55
    4 . ( y + 9 ) = 55 + 5
    4 . ( y + 9 ) = 60
    y + 9 = 60 : 4
    y + 9 = 15
    y = 15 – 9
    y = 6

  2. 95 – 5(y+2) =45
    5(y+2) = 95 -45
    5(y+2 )= 50
    y+2 = 50:5
    y+2=10
    y=10-2
    y=8
    Vậy y=8
    15y – 133 = 17
    15y = 17 + 133
    15y= 150
    y= 150:15
    y=10
    Vậy y=10
    4(x+9) – 5= 55
    4(x+9) = 55 +5
    4(x+9) = 60
    x+9 = 60:4
    x+9 =15
    x= 15-9
    x=6
    Vậy x= 6
     

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

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