genitamangur
genitamangur genitamangur
  • 26-04-2017
  • Mathematics
contestada

Use the substitution method to solve the following pair of simultaneous equations.
x+3y=4
y=2x-1

Respuesta :

JohnnysteinR
JohnnysteinR JohnnysteinR
  • 26-04-2017

x + 3y= 4

-2x+ y= -1 (-2x from the other side)

2x+ 6y= 8 (multiply by 2)

-2x+ y= -1

7y =7

y= 1

x+ 3(1)= 4 (you do this to find the y)

x+ 3= 4

x= 1 (-3 from the other side)

x= 1 y=1   (1,1)

Answer Link

Otras preguntas

I WILL MARK BRAINLIEST What is the document called that confirms a citizen's status as a naturalized citizen? A. Naturalization award B. certificate of Citizen
SOMEBODY PLS HELP ME NOW!!!!
When two plants, both y’all, were crossed, they produced some offspring that were dwarves. Assuming that the height of the plant is controlled by a single gene
Identify two reasons why there were more deaths in WWII than in WWI Explain why/how these two reasons resulted in more deaths in WWII than in WWI
Why was Kathy Striebel prevented from swimming on the Murray Junior High boys' swim team?
PLEASE HELP, I WILL MARK BRAINLEST. I'M SO CONFUSED. :((
What is the volume of this figure in cubic units. Please help me I will mark you Brainiest please
Give the equation of the circle centered at the origin and passing through the point (-10,0).
1. What are some reasons that children become overstimulated and how might it be prevented?
Suzy deposits $500 in a savings account with an interest rate of 6% compounded annually. if suzy does not make any additional deposits or withdrawals, how long