Question

$\frac{2}{5} x+81=x$ alguem me ajuda plmdsss

Answer 1

Explicação passo-a-passo:

$\sf \dfrac{2}{5}x + 81 = x$

$\sf \dfrac{2}{5}x - x = - 81$

$\sf 2x - x*(5) = - 81*(5)$

$\sf 2x - 5x = - 405$

$\sf - 3x = - 405$

$\sf \underline{- 3x = - 405*(-1)}$

$\sf 3x = 405$

$\sf x = \dfrac{405}{3}$

$\red{\sf x = 135}$