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

Toán Lớp 6: Tìm số nguyên x , biết: 2.(x-1)= 7+(-3)

Toán Lớp 6: Tìm số nguyên x , biết: 2.(x-1)= 7+(-3)

Comments ( 2 )

  1. 2.(x-1)= 7+(-3)
    <=>2x-2=7-3
    <=>2x=7-3+2
    <=>2x=6
    <=>x=3
    Vậy x=3

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