Question

dau coroana!!!!!(la cine da răspunsul corect)​

Answer 1

Răspuns:

x - y = -1

Explicație pas cu pas:

x = 6/24 + 11/44 + 16/64 + 21 /48 (se simplifica toate si ramane) =

1/4+1/4+1/4+1/4 = 4/4 = 1

y = (1+2+3+..+50) / 1275 = (50*51)/1275 = 2550/1275 = 102/ 51 = 2

deci x- y = 1 - 2 = -1

Answer 2

$\it x=\dfrac{\ 6^{(6}}{24}+\dfrac{\ \ 11^{(11}}{44}+\dfrac{\ \ 16^{(16}}{64}+\dfrac{\ \ 21^{(21}}{84}=\dfrac{1}{4}+\dfrac{1}{4}+\dfrac{1}{4}+\dfrac{1}{4}=1$

$\it y=\dfrac{1}{1275}+\dfrac{2}{1275}+\dfrac{3}{1275}+\ ...\ +\dfrac{50}{1275}=\dfrac{1+2+3+\ ...\ +50}{1275}=\\ \\ \\ =\dfrac{\dfrac{50\cdot51}{2}}{1275}=\dfrac{25\cdot51}{1275}=\dfrac{1275}{1275}=1$

$\it x-y=1-1=0$