Question

Ayuda me pueden ayudar con la actividad

Answer 1

Respuesta:

$\frac{x}{4} + \frac{x}{3} =12$

$\frac{7}{12} x=12$

$X=\frac{144}{7}$

7x = 144

7x + 42 = 6x + 47

7x + 42 - 6x = 47

7x - 6x =47 - 42

x = 47 - 42

X = 5

12 = 5x + 27

12 - 5x = 27

-5x = 27 - 12

-5x = 15

X = -15÷5

X = -3

$\frac{x}{4} + \frac{x+2}{7} = x - 7$

7x + 4(x + 2) = 28x - 196

7x + 4x +8 = 28x - 196  

11x + 8 = 28x - 196

11x + 8 - 28x = -196

11x - 28x = -196 - 8

-17x = -204

X = 12

-3 + x + 4= -1 -2

1 + x = -3

X= -3 - 1

X = -4