| x : ( -5/6 ) - 3/4 | = 2 ( giải cụ thể từng bước )
2 câu trả lời
\(\left| {x : \dfrac{-5}{6} -\dfrac{ 3}{4}}\right | = 2\)
TH1: \(x : \dfrac{-5}{6} -\dfrac{ 3}{4} = 2\)
\(\Rightarrow x : \dfrac{-5}{6} =2+\dfrac{3}{4}\)
\(\Rightarrow x : \dfrac{-5}{6} =\dfrac{11}{4}\)
\(\Rightarrow x=\dfrac{11}{4}.\dfrac{-5}{6}\)
\(\Rightarrow x=\dfrac{-55}{24}\) (tm)
TH2: \(x : \dfrac{-5}{6} -\dfrac{ 3}{4} = -2\)
\(\Rightarrow x : \dfrac{-5}{6} =-2+\dfrac{3}{4}\)
\(\Rightarrow x : \dfrac{-5}{6} =\dfrac{-5}{4}\)
\(\Rightarrow x=\dfrac{-5}{4}.\dfrac{-5}{6}\)
\(\Rightarrow x=\dfrac{25}{24}\) (tm).
TH1: x: ( -5/6) - 3/4= 2
x:(-5/6) = 2+ 3/4
x:(-5/6) =11/4
x = 11/4.(-5/6)
x = -55/24
TH2: x: ( -5/6) - 3/4= - 2
x:(-5/6) = -2+ 3/4
x:(-5/6) =-5/4
x = -5/4.(-5/6)
x = 25/24
Vậy x=-55/24 hoặc x=25/24
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