benstelly2830 benstelly2830
  • 02-05-2017
  • Mathematics
contestada

For the following system, use the second equation to make a substitution for y in the first equation. 2x + y = 5 y + 3 = 2x

Respuesta :

moshift1 moshift1
  • 02-05-2017
If y equals 2x - 3 in the second equation, than subsitute it in for y in the first.
2x + 2x - 3 = 5
4x - 3 = 5
4x = 8
x=2
2(2) + y = 5
x = 2 and y = 1

Answer Link
mesqueda85
mesqueda85 mesqueda85
  • 02-05-2017
For the second equation, y=2x-3. Substituting this in, you get 2x+2x-3=5. Add the 2x's (4x), and add 3 to the 5 (8). You should get 4x=8, which will give you x=2.  
Answer Link

Otras preguntas

Why was capturing egypt's suez canal so important to the axis powers?
Which of the following factors does not favor a change in gene frequency and, therefore, evolution? (A) large populations (B) mutations (C) emigration (D) genet
what were some of the problems that led to the rise of dictators in germany ,italy ,and japan?
If (x − 2)^2=49, then x could be ?
What is Germany in German?
How do you think the people conquered by the Romans felt about their new rulers
How do I solve this equation? If 3t-7=5t then 6t=a 21b-7c-21d-42
solve quadratic equation by factoring How do you do it 3k^2 + 72 = 33k
What features of the Chinese form of government did the mongols adopt?
What is 9-4(2p-1)=45?