Verified answer

Пошаговое объяснение:

[tex] - \frac{ 4}{5} \div 25 + 32.5 = \frac{ - 4}{5 \times 25} + 32.5 = \frac{ - 4}{125} + 32.5 = - \frac{4}{125} + 32.5 = - \frac{4}{125} + \frac{65}{2} = - \frac{8}{250} + \frac{8125}{250} = \frac{ - 8 + 8125}{250} = \frac{8117}{250} = 32 \frac{117}{250} = 32.468[/tex]

[tex] 2.1+\frac{78}{-5.4+1.5} =2.1+\frac{78}{-3.9} =2.1+\frac{780}{-39} =2.1-20=-17.9 [/tex]