\(\frac{5}{6}-\frac{1}{2}+2\)
\(=\frac{1}{3}+\frac{2}{1}\)
\(=\frac{7}{3}\)
\(\frac{3}{9}+\frac{9}{15}+\frac{8}{12}\)
\(\frac{8}{12}=\frac{2}{3};\frac{3}{9}=\frac{1}{3};\frac{9}{15}=\frac{3}{5}\)
\(\frac{3}{9}+\frac{9}{15}+\frac{8}{12}=\left(\frac{2}{3}+\frac{1}{3}+\frac{3}{5}\right)\)
\(=1+\frac{3}{5}=\frac{8}{5}\)
\(\frac{4}{10}+\frac{12}{32}+\frac{9}{15}\)
\(\frac{4}{10}=\frac{2}{5};\frac{9}{15}=\frac{3}{5};\frac{12}{32}=\frac{3}{8}\)
\(\frac{4}{10}+\frac{12}{32}+\frac{9}{15}=\left(\frac{2}{5}+\frac{3}{5}\right)+\frac{3}{8}\)
\(=1+\frac{3}{8}=\frac{11}{8}\)
~ Ủng hộ nhé ~
\(\frac{5}{6}-\frac{1}{2}+2=2\frac{1}{3}=\frac{7}{3}\)
bài 2a\(\frac{3}{9}+\frac{9}{15}+\frac{8}{12}=\frac{1}{3}+\frac{3}{5}+\frac{2}{3}=\frac{5}{15}+\frac{9}{15}+\frac{10}{15}=\frac{24}{15}=\frac{8}{5}=1\frac{3}{5}\)
