Question

X pe 3+2 (x -1)+7=12 ?

Answer 1

Răspuns:

$\frac{x}{3 + 2(x - 1) + 7} = 12$

$\frac{x}{3 + 2x - 2 + 7} = 12$

$\frac{x}{2x + 3 - 2 + 7} = 12$

$\frac{x}{2x + 8} = \frac{12}{1}$

x = 12(2x + 8)

x = 24x + 96

x - 24x = 96

- 23x = 96

$x = - \frac{96}{23}$