Question

fără a si b. Help am nevoie urgent dau coroana. sa fie cu rezultat cu tot ​

Answer 1

Răspuns:

c) ( $-\frac{36}{25}$ * $\frac{-5}{12}$ + $\frac{-6}{10}$ *$\frac{4}{5}$ ) *$\frac{1}{4}$= ( $\frac{3}{5}$ - $\frac{12}{25}$ ) *$\frac{1}{4}$ = $\frac{5*3-6}{25}$ *$\frac{1}{4}$= $\frac{15-6}{25}$ *$\frac{1}{4}$= $\frac{9}{25*4}$= 9/100= 0.09

d) $(\frac{15-1}{9} - \frac{5}{9} )$ * (- $\frac{16-1}{9}$) : $\frac{2*2+1}{2}$ = ($\frac{14}{9} - \frac{5}{9}$) * $\frac{-15}{9}$ *$\frac{2}{5}$= $\frac{6}{9}$ * $\frac{-3*2}{9}$= $\frac{2*3}{3*3} * \frac{-3*2}{3*3}$= - $\frac{4}{9}$= - 0,(4)

e) ( $-\frac{5}{6} - \frac{5}{6} *\frac{9}{25}$) *$\frac{15}{17}$= ($-\frac{5}{6} - \frac{3}{2*5}$) *$\frac{15}{17}$= $\frac{-5*10- 3*6 }{60}$ *$\frac{15}{17}$= $\frac{-68}{4*15} *\frac{15}{17}$= $\frac{-4}{4}$= -1

f) (-5) *(-0,2) : ($\frac{-3*5+1}{5}$)= 1*( $-\frac{5}{14}$)= - $\frac{5}{14}$

g) $(-\frac{2*9}{3*8} )$ *(-$\frac{2*8}{3*3}$) *$\frac{3*5}{4*8}$ + $\frac{3}{16}$ + $\frac{3}{4}$ * $\frac{20}{3}$= $\frac{4}{3} *\frac{3*5}{4*8}$ + $\frac{3}{16}$ + 5= $\frac{5}{8}$ + $\frac{3}{16}$+5= $\frac{5*2+3+5*16}{16} = \frac{10+3+80}{16}$= $\frac{93}{16}$

h) $\frac{7}{10} : (\frac{8}{10} -\frac{1}{10} )$* ( $\frac{8}{10} -\frac{5*3+4}{5}$)= $\frac{7}{10} * \frac{10}{7}$ * ($\frac{8}{10} -\frac{19}{5}$)= $\frac{70}{70} *$ ($\frac{8-38}{10}$)= 1* $\frac{-30}{10}$= -3