Question

ex 10 va rog mult am nevoie

Answer 1

Răspuns:

radio=

$\frac{3x}{7}$

rest=

$x - \frac{3x}{7} = \frac{7x - 3x}{7} = \frac{4x}{7}$

tablou=

$\frac{3}{8} \frac{4x}{7} = \frac{3x}{14}$

total suma

$\frac{3x}{7} + \frac{4x}{14} + 75 + 25 = x$

$\frac{6x + 4x + 1400}{14} = x$

$10x + 1400 = 14x$

$14x - 10x = 1400$

$4x = 1400$

$x = 350$