a) \(\frac{1}{3}-0,25+0,2=\frac{1}{3}-\frac{1}{4}+\frac{1}{5}=\frac{20-15+12}{60}=\frac{17}{60}\)
b) \(\frac{1}{6}-0,875+0,7=\frac{1}{6}-\frac{7}{8}+\frac{7}{10}=\frac{80-420+336}{480}=\frac{-4}{480}=\frac{-1}{120}\)
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a) \(\frac{1}{3}-0,25+0,2\)
\(=\frac{1}{3}-\frac{1}{4}+\frac{1}{5}\)
\(=\frac{1}{12}+\frac{1}{5}\)
\(=\frac{17}{60}\)
b)\(1\frac{1}{6}-\frac{7}{8}+\frac{7}{10}\)
\(=\frac{7}{6}-\frac{7}{8}+\frac{7}{10}\)
\(=\frac{7}{24}+\frac{7}{10}\)
\(=\frac{119}{120}\)
1/3-0.25+0.2=1/3+1/4+1/5=20/60+15/60+12/60=47/60
11/6-0.875+0.7=11/6-7/8+7/10=220/120-105/120+84/120=199/120
K CHO TUI NGHEN