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umka21 [38]
3 years ago
7

What is the value of x|5x + 6| + 6 = x​

Mathematics
1 answer:
zimovet [89]3 years ago
3 0

Answer:

Step-by-step explanation:

absolute(5x + 6) = x

There are 2 solutions to this

Solution 1

5x + 6 = x                    Subtract 5x from both sides.

5x - 5x + 6 = x - 5x

6 = - 4x                       Divide by - 4

6/ - 4  = -4x / -4

x = - 1.5

Solution 2

5x + 6 = - x

6 = -x - 5x

6 = - 6x

x = 6/-6

x = - 1

Here is a graph which shows the solutions.

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Answer:

Ok, primero, como lo deducimos gráficamente?

Sigamos estos pasos.

Dibujemos en una recta, la distancia entre el punto 0 soles y el precio de la bicicleta = 200 soles.

200 soles representa el 100%.

Ella lo quiere vender al 80% (o le quiere restar el 20%).

Entonces, con una regla, medir la distancia entre 0 soles y 200 soles.

Dividir esa cantidad por 10. (cada una de estas cantidades va a representar un 10%)

Multiplicar eso por 8.

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Abajo hay un dibujo donde se ve el método.

Una forma mas matemática de resolverlo es:

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Veamos el cociente de esas dos ecuaciones:

200/x = 100%/80%

x = 200*(80%/100%) = 160

Ella vendería la bicicleta en 160 soles.

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