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

List the cell cycle in correct order
Having a hard time please help thank you.​
Nicole used 3/8 of her ribbon to wrap a present . if she used 6 feet of ribbon , how much ribbon did Nicole have at first ?​
Find the inverse function of (Show work) f(x)=x^2-4
A myocardial infarction is a heart attack.Please select the best answer from the choices provided.​
Penn Company has a division that manufactures a component that sells for $ 50 and has variable costs of $ 25 and fixed costs of $ 10$ Another division wants to
What is -2-(-3)? Show your work.
Which is an open-ended question that could be used to start a discussion? Why do you think the bus should run more often? How many people take the bus? Do you t
Solve the system by elimination. 4x=−3y−10 9x+2y=6
Ratio equivalent to 3 : 4