Question

RESOLVER ESTOS EJERCICIOS:


\frac{X}{2} + 2- \frac{X}{12} = \frac{X}{6} - \frac{5}{4}


\frac{3X}{4} - \frac{1}{5} + 2X = \frac{5}{4} - \frac{x}{y} - \frac{3X}{20}

Answer 1

Respuesta:

1. x/2 +2 -x/12 = x/6 -5/4

x/3 -x/12 -x/6 = -5/4 -2

(4x -x -2x)/12 = (-5 -8)/2

x/12 = -13/2

x = -13(12)/2

x = -13(6)

x = -78

2. 3x/4 -1/5 +2x = 5/4 -x/y -3x/20

3x/4 +2x +x/y +3x/20 = 5/4 +1/5

(15x +40x +3x)/20 +x/y = (25 +4)/20

58x/20 +x/y = 29/20

(58xy +20x)/20y = 29/20

58xy +20x = 29(20y)/20

x(58y+20) = 29y

x = 29y /(58y+20)