Question

ПОМОГИТЕ СРОЧНО ДАМ ЗА ЕТО 10 БАЛЛОВV●ᴥ●V

Answer 1

а)

-1,4 < |-1,4|

$\frac{5}{4}$  < |-1,4|

$-\frac{5}{7}$ < |-1,4|

-1,4 < $\frac{5}{4}$

$\frac{5}{4}$  =  $\frac{5}{4}$

$-\frac{5}{7}$ <  $\frac{5}{4}$

б)

$-\frac{5}{7} + \frac{5}{4} = -\frac{20}{28} + \frac{35}{28} = \frac{15}{28} \\-1,4 * -(\frac{5}{7}) = \frac{10}{4} * \frac{5}{7} = \frac{50}{28} \\\(-\frac{5}{7}):\frac{5}{4} = (-\frac{5}{7})*\frac{4}{5} = -\frac{20}{35}$