appleeyebri appleeyebri
  • 16-01-2020
  • Mathematics
contestada

Solve the following system:
Y = x -2
2x + y = 5

Respuesta :

lordsonmyk
lordsonmyk lordsonmyk
  • 16-01-2020

Answer:

x = 7/3

y = 1/3

Step-by-step explanation:

y = x - 2.... (1)

2x + y = 5.... (2)

Rearranging equation (2), we have

y = -2x +5 .... (3)

Let's multiply equation (1) by 2 so that we can easily simplify by substitution.

Therefore, it becomes 2y = 2x - 4 ... (4)

We add equation (3) and (4)

3y = 1

y= 1/3

Now, substitute (y= 1/3) in equation 1

It becomes:

1/3 = x - 2

x = 1/3 + 2

Simplifying with a LCM of 3

x = (1 plus 6, all over 3)

= 1+6/ 3

= 7/3

Answer Link

Otras preguntas

please help me with this problem 3.14 = 22/7 and r = 7/4
(2x^2-17x-38)/(2x+3)
solve the following system of linear equations by substitution: 8x-y=-13 6x-3y=15
what is the sociological  name for strangers waiting in line to buy concert ticket.
the joining of a sperm cell and egg cell into a single unit is called what?
A voltaic cell is set up and a chemical reaction proceeds spontaneously. Which of the following will not occur in this reaction? a. The electrons will migrate
Average world grain production increased from 247 kg per person in 1950 to 342 kg per person in 1984. Given this information, calculate the average increase per
This polygon has only 4 sides no Congruent sides no right angles and no pairs of parallel sides who am I
Behavioral Adaptations: Behavior that animals begin life with that helps them meet their needs is called ________.
What are the powers of 3 in the range of 3 to 1,000?