Oblicz:
a) ( - 2 )³ : 1,6 - [ 5 - 6/5 * ( 10/3)² ]
(1 ½)² - (-3)² * ⅔
b) ____________________
-1¾ * (-1 3/7) + 2,5
Pilnie potrzebuje to na jutro wiec prosze o jak najszybsza odpowiedz ;)
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a) -8 : 1,6 - [ 5- 6/5 * 100/9]=
= 5- [5 - 40/3]=
= 5 - [5 - 13 1/3]=
=5 + 8 1/3=
= 13 1/3
b)(9/4 - 9 * 2/3) / ( - 7/4 * ( - 10/7) + 2,5)=
= (9/4 - 6) / ( 2,5 + 2,5)=
= (-3 3/4) / 5=
= (- 15/4) * (1/5)=
= - 3/4