Question

efectuati: aveți problema in poza,Multumesc pentru ajutor!exercitiul 15!

Answer 1

$\bf 15.\ \it =(2^{62}+6\cdot2^{60}-5\cdot2^{60}):(2^{63}-5\cdot2^{60})-1=\\ \\ =[2^{60}(4+6-5)]:[2^{60}(8-5)]-1=(5\cdot2^{60}):(3\cdot2^{60})-1=\\ \\ =\dfrac{5}{3}-1=\dfrac{5}{3}-\dfrac{3}{3}=\dfrac{2}{3}$