Seudónimo Seudónimo
  • 23-12-2018
  • Mathematics
contestada

100 points! What is the solution to the system of equations? x+y=2 x-y=4 ( , )

Respuesta :

altavistard
altavistard altavistard
  • 23-12-2018

Answer:

(3, -1)

Step-by-step explanation:

The system of linear equations x+y=2 x-y=4 can be rewritten as

x+y=2

x-y=4

We can eliminate y by adding these two equations together:

x+y=2

x-y=4

----------

2x = 6

Solving for x, x = 3.  

Now find y by subbing 3 for x in the first equation:

3 + y = 2.  Then y = -1.

The solution is (3, -1).

Answer Link

Otras preguntas

Help meeeeeeeeeeeeeee ​
The Salmonella bacteria infect human, when eating contaminated food or water, causing some symptoms as diarrhea. Which part of the alimentary canal is most affe
Please answer #1 hurry!!! Will give brainliest
why are the himalayas important for us
Scrivi tutti gli isomeri dell’esano
A card is drawn randomly from a standard deck of 52 cards. Find the probability of the given event. a red 3
Ever since she was little, people told Amelia she would never become a doctor. Starting in ninth grade, she decided to prove them wrong. She made straight As a
EXERCISE 2:Look at the photo.Where are the people? What are they doing?
Which of the following answers about the American Army's winter at Valley Forge is true? (there are 2 correct answers, so click 2 boxes) a. The American Army lo
Find the equation of the line that goes through the points: (-1,4) and (-8,11)