Question

1)Efectuați:
a. ($-2\frac{1}{2}$):(-2,5)-[-3+($-\frac{1}{14}$):($-\frac{5}{7}$)]:0,01=
b. {[$\frac{5}{6}$×($\frac{2}{3}$ - $\frac{4}{5}$×$\frac{10}{27}$)×$\frac{25}{18}$]$-4\frac{2}{3}$}:($-1\frac{13}{24}$)=

Answer 1

a. (-5supra2):(-25supra10)-[-3-1supra14:(-5supra7)]:1supra100=
=(-5supra2):(-5supra2)-[-3-1supra14X-7supra5]X100=
=1-[-3+1supra10]X100=
=1-(-30+1)supra10X100=
=1-(-29)X10=
=1-(-290)=
=1+290=
=291

b.{[5supra6X(2supra3-8supra27)X25supra18]-14supra3}:(-37supra24)=
={[5supra6X((18-8)supra27))X25supra18]-14supra3}X(-24supra37)=
={[5supra6X10supra27X25supra18]-14supra3}X(-24supra37)=
=[1250supra2916-13608supra2916]X(-24supra37)=
=(-12358supra2916)X(-24supra37)=
=12358supra2916X24supra37=
=664supra243