\(a,\)\(\frac{13}{18}\div\frac{5}{9}-1\)
\(=\frac{13}{18}\times\frac{9}{5}-1\)
\(=\frac{13}{10}-1\)
\(=\frac{3}{10}\)
\(b,\)\(3+\frac{9}{4}\div\frac{3}{5}\)
\(=\)\(3+\frac{9}{4}\times\frac{5}{3}\)
\(=\)\(3+\frac{15}{4}\)
\(=\frac{27}{4}\)
\(\frac{13}{18}\div\frac{5}{9}-1\)
\(=\frac{13}{10}-1\)
\(=\frac{3}{10}\)
\(3+\frac{9}{4}\div\frac{3}{5}\)
\(=3+\frac{15}{4}\)
\(=\frac{27}{4}\)
a,bằng 3/10
b,bằng 27/4
a)=13/10-1=3/10
b)=3-15/4=-3/4
mình nhầm câu b
b)=3+15/4=27/4
a) \(\frac{13}{18}:\frac{5}{9}-1\)
\(=\frac{13}{10}-1\)
\(=\)\(\frac{3}{10}\)
b)
\(3+\frac{9}{4}\)\(:\frac{3}{5}\)
\(=3+\frac{15}{4}\)
\(=\)\(\frac{27}{4}\)
