Question

proszę o pomoc w obliczeniu zad w załącznikach nie sam wynik tylko tez obliczenia

Answer 1

zad3

 

a) (11/4 * 7/1 - 22)/(11) +3/4 = (77/4 -22)/(11)+ 2/4 = (19 1/4 - 22)/(11) + 3/4 = (- 2 3/4)/(11)+3/4 = 11/3 * 1/11 + 3/4 = 1/3 + 3/4 = 4/12 + 9/12 = 13/12

 

b) (45/495 - 165/495)/(22/6 - 15/6) * 11/4 = (-120/495)/(7/6) * 11/4 = [(-120/495) * 6/7] * 11/4 = -720/3465 * 11/4 = 144/693 * 11/4 = 36/693 * 11/4 = 99/693 = 33/231

 

c) 2 - (8 - 1/2)/(12 + 1/2) = 2 - (7 1/2)/(12 1/2) = 2 - 15/2 * 2/25 = 2 - 3/5 = 1 2/5

 

...

 

zad7

 

a) (10/15 + 3/15)/ (4/10 - 5/10) + (53/17 - 58/13) = 13/15 * (- 10/1) + (689/221 - 986/221) = 26/3 - 297/221 = 5746/663 - 297/663 = 5449/663

 

b) 2/3 - (0,8 * 3/4 - 4/5) * (-2/3) = 2/3 - (8/10 * 3/4 - 4/5) * (-2/3) = 2/3 - (6/10 - 8/10) * (-2/3) = 2/3 - -1/5( * (-2/3) = 2/3 - 2/15 = 10/15 - 2/15 = 8/15

 

c)  (2/6 - 3/6) : (20/12 - 15/12) - (2/8 -3/8 * 8/5) = (-1/6) * 12/5 - (2/8 - 3/5) = -2/5 - (10/40 - 24/40) = -2/5 + 14/40 = -16/40 = 14/40 = -1/20