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

Toán Lớp 6: 2x – 15 = -11 – (-16) -7 – 2x = -37 – (-26)

Toán Lớp 6: 2x – 15 = -11 – (-16)
-7 – 2x = -37 – (-26)

Comments ( 2 )

  1. 2x – 15 = -11 – (-16)
    2x – 15 =-11+ 16
    2x – 15 = 5
    2x=15+5=20
    x=20:2
    x=10
    -7 – 2x =-37 – (-26)
    -7 – 2x =-37 +26
    -7 – 2x =-11
    2x =-7+11
    2x=4
    x=4:2
    x=2
     

  2. Giải đáp:
    2x – 15 = -11 – (-16)
    2x – 15 = -11 + 16
    2x – 15 = 5
    2x = 5 + 15
    2x = 20
    x = 20 : 2
    x = 10
    Vậy x = 10.
    -7 – 2x = -37 – (-26)
    -7 – 2x = -37 + 26
    -7 – 2x = -11
    2x = -7 – (-11)
    2x = -7 + 11
    2x = 4
    x = 4 : 2
    x = 2
    Vậy x = 2.
    Chúc học tốt!!!
     
     

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