Question

СРОЧНО !!! Помогите прошу!

Answer 1

1) $\frac{168}{25}*(- \frac{7}{3})+ \frac{93}{25}* \frac{7}{3} \\ \\ - \frac{56}{25}*7+ \frac{31}{25}*7 \\ \\ - \frac{392}{25}+ \frac{217}{25}=- \frac{175}{25}=-7$

2)$- \frac{36}{5}* \frac{32}{15}- \frac{36}{5}* \frac{52}{15}- \frac{36}{5}*(- \frac{64}{15}) \\ \\ - \frac{12}{5}* \frac{32}{5}- \frac{12}{5}* \frac{52}{5}+ \frac{12}{5} * \frac{64}{5} \\ \\ - \frac{384}{25}- \frac{624}{25}+ \frac{768}{25}=- \frac{240}{25}=- \frac{48}{5}=-9,6$

3) $- \frac{51}{14}* \frac{3}{10}- \frac{3}{10} * (-\frac{31}{21})+ \frac{3}{10}* \frac{7}{6} \\ \\ -\frac{153}{140}+ \frac{1}{10}* \frac{31}{7}+ \frac{1}{10}* \frac{7}{2} \\ \\ - \frac{153}{140}+ \frac{31}{70}+ \frac{7}{20}= \frac{-153+62+49}{140}=- \frac{42}{140}= -0,3$