oblicz 30 % wyrażenia .. 6xy -5 x + 2 y
dla :
x=
y=
Wystarczy podstawić odpowiednie liczby.
6* 1 1/3 * 1 1/4 - 5 * 1 1/3 + 2 * 1 1/4 =
= 120/12 - 20/3 + 10/4 = 10 - 80/12 +30/12 =
10 - 120/ 12 = 10-10 = 0
30%(6xy-5x+2y)=0,3(6·1⅓·1¼-5·1⅓+2·1¼)=0,3(6·4/3·5/4-5·4/3+2·5/4)=
=0,3(24/3·5/4-20/3+10/4)=0,3(10-80/12+30/12)=0,3(10-50/12)=
=0,3(120/12-50/12)=0,3·70/12=0,3·35/6=3/10·35/6=1/10·35/2=
=35/20=1 15/20= 1¾
*/ - kreska ułamkowa
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Wystarczy podstawić odpowiednie liczby.
6* 1 1/3 * 1 1/4 - 5 * 1 1/3 + 2 * 1 1/4 =
= 120/12 - 20/3 + 10/4 = 10 - 80/12 +30/12 =
10 - 120/ 12 = 10-10 = 0
30%(6xy-5x+2y)=0,3(6·1⅓·1¼-5·1⅓+2·1¼)=0,3(6·4/3·5/4-5·4/3+2·5/4)=
=0,3(24/3·5/4-20/3+10/4)=0,3(10-80/12+30/12)=0,3(10-50/12)=
=0,3(120/12-50/12)=0,3·70/12=0,3·35/6=3/10·35/6=1/10·35/2=
=35/20=1 15/20= 1¾
*/ - kreska ułamkowa