w3bstermusk w3bstermusk
  • 18-11-2020
  • Mathematics
contestada

elimination to solve the system of equation
x-y=5 and x+y=3

Respuesta :

dbxmaster321 dbxmaster321
  • 18-11-2020
x = 4 , y = -1
Explanation:
solve by elimination ie eliminate x or y from the equations by performing operations on them.
first label the equations , to follow the process.
x - y = 5 ----------------(1)
x+ y = 3 ----------------(2)
If (1) and (2) are added then y will be eliminated.
(1) + (2) gives : 2x = 8 → x = 4
now substitute this value of x into either of the 2 equations and solve for y.
let x = 4 in (1) : 4 - y = 5 → -y = 1 → y = -1
check in (1) : 4-(-1) = 4+1 = 5
check in(2) : 4 - 1 = 3
Answer Link

Otras preguntas

Comemos la ensalada con mantequilla. edit the sentence so it makes sense.
Who was Aten? (ancient Egypt)
A group of northern european port cities organized themselves into what came to be called the?
ONLY IF YOU READ THE LATEHOMECOMER!!!!!!!!!!!!!!!!!!!!!!! 12. Give two reasons why writing the essay about Romeo and Juliet is an important event in Yang's life
Just like family structures, family roles change over time. a.true b.false
42 feet equals how many inches
What is the exact number for pie?
Identify The Pronouns: Even if you could do 3 sentences or 2 that would be fine. This question is for 99 points. Those are Tom's. They didn't give themselves a
In witch type of colony does a person or persons own all the land and control the colony's government?
In 4 -5 sentences, summarize the science of the sport of curling and how it relates to friction