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

treatment of psychological disorders: A) often makes the problem worse B) can offer significant relief. C) is rarely helpful. D) is often unclear.
Please help me out please
All the presidents men what advantages could be gained in a presidential campaign by spying on the opposition
what is meant by solar system ​
Use the function below to find f(3) f(x)= (1/6)^x
A particular computer takes 78 nanoseconds to carry out seven sums and ten products. Another computer takes 55 nanoseconds to carry out 4 sums and eight product
Solve the matrix equation for X.
Why does a rainforest have more biodiversity than a temperate forest? give one reason. apex?
Help me, please easy Geometry question
What is the value of x?