mursal81 mursal81
  • 21-12-2018
  • Mathematics
contestada

Solve by substitution 2y=x+1 -2x-y=7

Respuesta :

Cathi Cathi
  • 21-12-2018
-2x-y=7
Add 2x to both sides
-y= 2x+7
Multiply both sides by-1
Y= -2x-7



2y=x+1

2(-2x-7)= x+1
-4x -14. =x+1
Add 14 to both sides
-4x=x +15
Subtract x from both sides
-5x=15
X=-3

2y =-3+1
-2y=-2
Y=1

(-3,1)
Answer Link

Otras preguntas

Need help please I don't get what it's asking or what the answer is
The tickets for an upcoming ballet cost $54 per person. Mrs. Anastos wants to purchase 16 tickets for her friends. What is the total cost of the tickets? $540 $
dario rolled a number cube and flipped a coin. the number cube has 6 sides, each labeled either 1,2,3,4,5, and 6. what is the probability that dario rolled a 4
Simple sentence using the word likewise plea
__________________ united the Native Americans
Exploring how we humans are diverse because of our differing genes and environments is the focus of
What effect did the black death have on medieval europe?
What are the potential solutions to the equation 2ln(x+3)=0
Which number is between 0.5 and 5/8 A) 1/4 B) 8/28 C) 9/16 D) 19/28
Which of these titles might be found in the fiction section of a library? the history of north dakota, preparing for the act, how to build a deck, and serena’s