kpelayo2005
kpelayo2005 kpelayo2005
  • 02-05-2019
  • Mathematics
contestada

e
| 2.
Solve this system of two linear equations using the
linear combination method.
2x - 5y = 18
y-x=-10
​

Respuesta :

chikafujiwara
chikafujiwara chikafujiwara
  • 02-05-2019

Answer:

[tex]x=\frac{32}{3}, y=\frac{2}{3}[/tex]

Step-by-step explanation:

We can multiply the second equation by 2 to eliminate.

[tex]2(y-x)=2(-10) \\ \\ 2y-2x=-20[/tex]

Let's eliminate.

[tex]2x-5y=18 \\ -2x+2y=-20 \\ -3y=-2 \\ y=\frac{2}{3}[/tex]

Now we can substitute back into the equation to find the value of [tex]x[/tex].

[tex]\frac{2}{3}-x=-10 \\ \\ \frac{2}{3}-x=-\frac{30}{3} \\ \\ -x=-\frac{32}{3} \\ \\ x=\frac{32}{3}[/tex]

Answer Link

Otras preguntas

Write a history on Sir Issac Newton, About 200-250 words
Which is most likely the correlation coefficient for the set of data shown? –0.91 –0.35 0.35 0.91 ed guinty be killin me stg
What is one of the main purposes of irony? O A. To inspire the reader's imagination O B. To provide a contradiction O C. To personify non-human things O D. To c
In the diagram, how many pairs of vertical angles are shown? ​
Please help me ASAP. Triangle Angle Theorems The value of x is _____?
In the drawing below, line n is a transversal that intersects two parallel lines. What is the measure of Angle 4? 40° 50° 130° 140°
What does the interneuron do between the afferent and efferent neurons?
Find RS in the picture please
find the value of x if A, B and C are collinear points and B is between A and C. AB= 6x, BC= x-5, AC= 23
Simplify (4x² – 2x + 8) - (x² + 3x - 2)