\(a,\frac{3}{15}+\frac{2}{5}=\frac{1}{5}+\frac{2}{5}=\frac{3}{5}.\)
\(b,\frac{9}{8}-\frac{5}{6}=\frac{7}{24}\)
\(c,\frac{1}{2}+\frac{3}{7}+\frac{11}{14}=\frac{13}{14}+\frac{11}{14}=\frac{24}{14}=\frac{12}{7}\)
\(d,\frac{8}{3}-\frac{1}{2}-1=\frac{13}{6}-1=\frac{7}{6}\)
~~~ học tốt ~~~
\(a,\frac{3}{15}+\frac{2}{5}\)
\(=\frac{1}{5}+\frac{2}{5}\)
\(=\frac{3}{5}\)
\(b,\frac{9}{8}-\frac{5}{6}\)
\(=\frac{7}{24}\)
\(c,\frac{1}{2}+\frac{3}{7}+\frac{11}{14}=\frac{12}{7}\)
\(d,\frac{8}{3}-\frac{1}{2}-1=\frac{7}{6}\)
a) \(\frac{3}{15}+\frac{2}{5}=\frac{3}{15}+\frac{6}{15}\)
\(=\frac{9}{15}=\frac{3}{5}\)
b) \(\frac{9}{8}-\frac{5}{6}=\frac{54}{48}-\frac{40}{48}\)
\(=\frac{14}{48}=\frac{7}{24}\)
c) \(\frac{1}{2}+\frac{3}{7}+\frac{11}{14}=\frac{7}{14}+\frac{6}{14}+\frac{11}{14}\)
\(=\frac{7+6+11}{14}=\frac{24}{14}=\frac{12}{7}\)
d) \(\frac{8}{3}-\frac{1}{2}-1=\frac{7}{6}\)
\(\frac{3}{15}+\frac{2}{5}=\frac{1+2}{5}=\frac{3}{5}\)
\(\frac{9}{8}-\frac{5}{6}=\frac{27-20}{24}=\frac{7}{24}\)
\(\frac{1}{2}+\frac{3}{7}+\frac{11}{14}=\frac{7+6+11}{14}=\frac{24}{14}=\frac{12}{7}\)
\(\frac{8}{3}-\frac{1}{2}-1=\frac{16-3-6}{6}=\frac{7}{6}\)
a,\(\frac{3}{15}+\frac{2}{5}=\frac{3}{15}+\frac{6}{15}=\frac{3}{5}\)
b,\(\frac{9}{8}-\frac{5}{6}=\frac{54}{48}-\frac{40}{48}=\frac{14}{48}\)
c,\(\frac{1}{2}+\frac{3}{7}+\frac{11}{14}=\frac{7}{14}+\frac{6}{14}+\frac{11}{14}=\frac{24}{14}\)
d,\(\frac{8}{3}-\frac{1}{2}-1=\frac{16}{6}-\frac{3}{6}-1=\frac{13}{6}-1=\frac{7}{6}\)
\(a,\frac{3}{15}+\frac{2}{5}=\frac{3}{15}+\frac{6}{15}=\frac{9}{15}=\frac{3}{5}\)
\(b,\frac{9}{8}-\frac{5}{6}=\frac{54}{48}-\frac{40}{48}=\frac{14}{48}=\frac{7}{24}\)
\(c,\frac{1}{2}+\frac{3}{7}+\frac{11}{14}=\frac{7}{14}+\frac{6}{14}+\frac{11}{14}=\frac{24}{14}=\frac{12}{7}\)
\(d,\frac{8}{3}-\frac{1}{2}-1=\frac{16}{6}-\frac{3}{6}-\frac{6}{6}=\frac{7}{6}\)
