Question

а. 1 2/7 ×1 1/4 =

б. 4 2/3 × 2/5 =

в. 1 3/5 × 3 3/4 =

г. 4/9 × 2 3/4 =

д. 2 3/4 ×4/11 =

е. 1 3/4 × 1 5/7 =

ж. 3 1/4 × 4 =

з. 10 × 5 2/5 = помогите пожалуйста срочно

Answer 1

а) $1\frac{2}{7} *1\frac{1}{4} =\frac{9}{5} *\frac{5}{4} = \frac{45}{28}$

б) $4\frac{2}{3} *\frac{2}{5} =\frac{14}{3} *\frac{2}{5}=\frac{28}{15}$

в) $1\frac{3}{5} *3\frac{3}{4} = \frac{8}{5} *\frac{15}{4} = 2*3 = 6$

г) $\frac{4}{9} *2\frac{3}{4}= \frac{4}{9}*\frac{11}{4}=\frac{1}{9}*11=\frac{11}{9}$

д) $2\frac{3}{4}*\frac{4}{11} = \frac{11}{4} * \frac{4}{11}=1$

e) $1\frac{3}{4} *1\frac{5}{7}=\frac{7}{4} *\frac{12}{7} = 3$

ж) $3\frac{1}{4} *4 = \frac{13}{4} * 4 = 13$

з) $10*5\frac{2}{5} = 10*\frac{27}{5} = 2*27=54$