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

Toán Lớp 6: 2x+5 =3^4:3^2 x-7 =(-14 )+(-8)

Toán Lớp 6: 2x+5 =3^4:3^2
x-7 =(-14 )+(-8)

Comments ( 1 )

  1. Giải đáp:
    2x+5=$3^{4}$ : $3^{2}$
    2x+5=81:9
    2x+5=9
    2x=9-5
    2x=4
    x=4:2
    x=2
    x-7=(-14 )+(-8)
    x-7=-22
    x=-22+7
    x=-15
     

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

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