Question

\frac{2+x}{6} =\frac{2x-1}{3} determinati solutia

Answer 1

( 2 + x ) / 6 = ( 2x - 1 ) / 3

2 + x = 2 ( 2x - 1 )

2 + x = 4x - 2

x - 4x = -2 -2

-3x = - 4 ⇒ x = 4 / 3

S = { 4 / 3 }

Answer 2

Răspuns:

    x = $\frac{4}{3}$

Explicație pas cu pas:

    $\frac{2+x}{6}=\frac{2x-1}{3}$

    3(2 + x) = 6(2x - 1)

    6 + 3x = 12x - 6

    3x - 12x = -6 - 6

    -9x = -12

    -x = $-\frac{12}{9}$

    -x = $-\frac{4}{3}$ ║ × (-1)

    x = $\frac{4}{3}$