Question

Stiind ca x+y+13=24, determinati 19+2 x y + 2 x X

Answer 1

Răspuns:

x+y+13=24⇒x+y=11x2⇒2x+2y=22

19+2x+2y=19+22=41 :)

Answer 2

Răspuns:

41

Explicație pas cu pas:

$x + y + 13 = 24 \\ x + y = 24 - 13 \\ \implies x + y = 11$

$19 + 2 \times y + 2 \times x = 19 + 2 \times (x + y) = 19 + 2 \times 11 = 19 + 22 = \bf 41$