a.
\(\left|x\right|+\frac{7}{4}=\frac{19}{8}\)
\(\left|x\right|=\frac{19}{8}-\frac{7}{4}\)
\(\left|x\right|=\frac{19-14}{8}\)
\(\left|x\right|=\frac{5}{8}\)
\(x=\pm\frac{5}{8}\)
Vậy \(x=\frac{5}{8}\) hoặc \(x=-\frac{5}{8}\)
b.
\(\left|x\right|-\frac{4}{9}=\frac{2}{3}\)
\(\left|x\right|=\frac{2}{3}+\frac{4}{9}\)
\(\left|x\right|=\frac{6+4}{9}\)
\(\left|x\right|=\frac{10}{9}\)
\(x=\pm\frac{10}{9}\)
Vậy \(x=\frac{10}{9}\) hoặc \(x=-\frac{10}{9}\)
c.
\(\frac{8}{3}-\left|x\right|=-\frac{1}{2}\)
\(\left|x\right|=\frac{8}{3}+\frac{1}{2}\)
\(\left|x\right|=\frac{16+3}{6}\)
\(\left|x\right|=\frac{19}{6}\)
\(x=\pm\frac{19}{6}\)
Vậy \(x=\frac{19}{6}\) hoặc \(x=-\frac{19}{6}\)
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