Question

Por favor Alguien que me ayude con estás ecuaciones :D

Answer 1

Primera:
$\frac{4x}{33 + x} = \frac{1}{3}$
12x = 33 + x
11x = 33
x = 3

Segunda:
$\frac{4x}{15} - \frac{6x + 28}{5} = 0$
$\frac{4x - 18x + 84}{15}$ = 0
$\frac{-12x + 84}{15} = 0$
-12x + 84 = 0
-12x = -84
12x = 84
x = 7

Tercera:
$\frac{2x}{3} = \frac{5x}{12} - 2$
$\frac{2x}{3} = \frac{5x - 24}{12}$
24x = 15x - 72
9x = -72
x = -8

Cuarta:
$3x - \frac{2x}{5} = \frac{3x}{10} + 14$
$\frac{13x}{5} = \frac{3x + 140}{10}$
130x = 15x + 700
115x = 700
x = 6,...

Quinta:
$\frac{4x - 3}{5} - \frac{4x}{3} = \frac{2x - 26}{15}$
$\frac{12x - 9 - 20x}{15} = \frac{2x - 26}{15}$
-8x - 9 = 2x - 26
-10x = -17
x = $\frac{17}{10}$