Question

va rog frumos, e urgent
macar unul dintre exerciti​

Answer 1

Răspuns:

Exercituil 9.

a= 2

b= -14

$\frac{a-3*b}{3a+b} = \frac{2-3*(-14)}{3*2-14} = \frac{44}{8} = \frac{11}{2}$

Exercitiul 10

x+y=67 ⇒y =67-x

$\frac{x-10}{y} = \frac{1}{2}$ ⇒ 2(x-10) = y ⇒ 2x -20 = 67 - x ⇒ 3x = 87 ⇒ x = $\frac{87}{3}$= 29

y = 67 - x ⇒ y = 67 - 29 = 38

Exercitiul 11

A={64,102,1234,5532,10010, $10^{5}$}

B={27,102,5532}

C={5532}