Question

Решить от души найдите значение числового выражения. (6 8/15-4 21/45)*4,5-2 1/6: 0,52

Answer 1

$(6 \frac{8}{15}-4 \frac{21}{45})*4,5-2 \frac{1}{6}:0,52= (\frac{98}{15}-\frac{201}{45})*4\frac{5}{10}-\frac{13}{6}:\frac{52}{100}$ = $(\frac{294}{45}-\frac{201}{45})*4\frac{1}{2}-\frac{13}{6}: \frac{13}{25} = \frac{93}{45}* \frac{9}{2} -\frac{13}{6}*\frac{25}{13}$ = $\frac{93}{10} -\frac{25}{6}= \frac{279-125}{30}= \frac{154}{30}= \frac{77}{15}$