GhostRoseviz
Rozwiązane

Oblicz

a) - 8 + 4 : ( - 2 )
b) ( - 5 ) * ( - 19 + 15 )

Oblicz

a) 8/2/5 b) 4/9/5/3 c) 5 * 7/5/8

Odpowiedź :

Basetlaviz

[tex]a) \ -8+4:(-2) =-8 + (-2) =-8-2 = -10\\\\b) \ (-5)\cdot(-19+15) = (-5)\cdot(-4) = 20[/tex]

[tex]a) \ \frac{8}{\frac{2}{5}} = 8\cdot\frac{5}{2} = 4\cdot5 = 20\\\\b) \ \frac{\frac{4}{9}}{\frac{5}{3}} = \frac{4}{9}\cdot\frac{3}{5} = \frac{4}{15}\\\\c) \ 5\cdot\frac{7}{\frac{5}{8}} = 5\cdot7\cdot\frac{8}{5} = 7\cdot8 = 56[/tex]

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