Question

re,olvatu in multimea intregi ecuatile a) 2(2×+5)-9=13 repede va rog​

Answer 1

Răspuns:

2 ( 2X + 5 ) - 9 = 13

=> 4X + 10 - 9 = 13

=> 4X + 1 = 13 => 4X = 13 - 1 => 4X = 12 => X = 12 : 4 => X = 3

Answer 2

Răspuns:

x = 3

Explicație pas cu pas:

$2(2x+5) - 9 = 13 \\ 4x + 10 = 13 + 9 \\ 4x = 22 - 10 \\ 4x = 12 \implies x = 3$