hcerda122 hcerda122
  • 24-11-2020
  • Mathematics
contestada

solve the system of linear equations by substitution.
x + 4y = 6
x - y = 1

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 24-11-2020

9514 1404 393

Answer:

  (x, y) = (2, 1)

Step-by-step explanation:

Use the second equation to write an expression for x:

  x = 1 +y

Substitute that into the first equation:

  (1 +y) +4y = 6

  5y = 5 . . . . . . . . subtract 1, collect terms

  y = 1 . . . . . . . divide by 5

  x = 1 +1 = 2 . . . use the expression for x to find x from y

The solution is (x, y) = (2, 1).

Answer Link

Otras preguntas

As president, you know that eventually your term will end and you will run for reelection. You also know that the United States needs to become more industriali
FRENCH HELP PLEASE!!!
Please help me with these math problems
Which of the following caused the Boston Massacre to occur in 1770? A. The British Red Coats threw snowballs at the colonists. B. The colonists threw snowballs
The following trial balance of Oriole Co. does not balance. ORIOLE CO. TRIAL BALANCE JUNE 30, 2020 Debit Credit C
What is the answer to 5 ≥ 3x/4 + 12 ?
Can someone help me solve this chemistry HW
what is 5"5 in cm can u please show the work​
WILL MARK BRAINIEST!!! 6. What is a cell? 7. What is a battery? 8. How do open and closed circuits differ?
Explain what the French and Indian War was about, who was involved and how it relates to the American Revolution.​