Odpowiedzi

2010-03-09T13:24:45+01:00
4 ¾ - 1 ⅞ = 4 6/8-1⅞ =3 14/8-1⅞=2⅞

-8 1/6 +2 2/3 =-8⅙ +2 4/6 = -5 3/6=-5½

4 4/9 *(-3 3/8)=40/9 * (-27/8)=5*-3=-15

(-8 2/3): (-1 4/9)=-26/3:(-13/9)=26/3* 9/13=2*3=6 (minusy się skróciły)

6/7 - 15/28 : (-2/3)^-2 =6/7- 15/28:(-3/2)²=6/7-15/28:9/4=
=6/7 -15/28*4/9=6/7-5/7*1/3=6/7-5/21=18/21-5/21=13/21


3^11 : 3^-2 * 3^5=3¹¹:3⁻²*3⁵=3¹⁸

27^11 * 81=27¹¹*81=3³³*3⁴=3³⁷