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

Jimmy filled his fish aquarium with water one night. The next morning, Jimmy noticed the water level had dropped 1.5 inches. Which of the following equations co
What are 5 clothing items in French?
what is 1/10 as much as 100?
How do you change a whole number into a fraction
The least common multiple (lcm) is the _____ multiple, other than 0, common to sets of multiples.
why is it important for all animals to behave differently? plz help i need this answered asap
DEFINE VIABLE BUSINESS IDEA
What is hamlets tragic flaw? (Opinion pls)
Which of the following was a belief of Voltaire? 1.) Kings should be guided by reason. 2.) Government should be split into 3 Branches. 3.) An absolute monarchy
Coal and rivers provided energy to run industry in the United States. True False