Toán Lớp 7: x.[2018 + 1/2018 – 2019 – 1/2019] = 1/3 + 1/6 – 1/2
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Toán Lớp 7: x.[2018 + 1/2018 – 2019 – 1/2019] = 1/3 + 1/6 – 1/2
Comments ( 2 )
=>x.(2018 + 1/2018 – 2019 – 1/2019) = 2/6 + 1/6 – 1/2
=>x.(2018 + 1/2018 – 2019 – 1/2019) = 3/6-1/2
=>x.(2018 + 1/2018 – 2019 – 1/2019) = 1/2-1/2
=>x.(2018 + 1/2018 – 2019 – 1/2019) = 0
=>x=0 ( do 2018+1/2018-2019-1/2019\ne0)
Vậy x=0