Question

[(27/32 - 7/24 - 5/36):(- 17/24) -(-0,8(3))] : (-0,25)

ajutor va rog!!

Answer 1

$[( \frac{27}{32} - \frac{7}{24} - \frac{5}{36} ) : (-\frac{17}{24} ) -(- \frac{83-8}{90} )] : (-\frac{25}{100} )$=

$[(\frac{27*9}{288} - \frac{7*12}{288} - \frac{5*8}{288} ) * (-\frac{24}{17}) + \frac{76}{90} )]*(-4) =$

$[(\frac{243}{288} - \frac{84}{288} -\frac{40}{288} )*(-\frac{24}{17} ) +\frac{76}{90} ] *(-4)=$

$(\frac{119}{288} *\frac{-24}{17} + \frac{76}{90} ) *(-4)=$

$(\frac{-7}{12} + \frac{76}{90} ) * (-4) =$

$(\frac{-7*15}{180} + \frac{76*2}{180} ) *(-4)=$

$\frac{-105+152}{180} *(-4)=$

$\frac{47}{180} *(-4)=$$\frac{-47}{45}$

Answer 2

[(27/32-7/24-5/36):(-17/24)-(-0,8(3))]:(-0,25)=

=[(243/288-84/288-40/288):(-17/24)+(83-8)/90]:(-25/100)=

=[(159/288-40/288):(-17/24)+75/90]:(-1/4)=

=[119/288:(-17/24)+5/6]:(-1/4)=

=[119/288×(-24/17)+5/6]:(-1/4)=

=(-7/12+5/6):(-1/4)=

=(-7/12+10/12):(-1/4)=

=3/12:(-1/4)=

=1/4:(-1/4)=

=1/4×(-4)= -1