bigfella558 bigfella558
  • 03-07-2017
  • Mathematics
contestada

What is the first step in solving this system of equations? 2x – 5y = 7 3x + 7y = –3

Respuesta :

Аноним Аноним
  • 03-07-2017
Multiplying equation by-
2x-5y=1....[*3]
-3x+7y=-3..[*2]


Adding both equations after multiplication,we get-
6x - 15y = 3
-6x + 14y =-6

-------------
y = -3
-------------
Answer Link
playerawesome1
playerawesome1 playerawesome1
  • 03-07-2017
The first step will be to multiply the equation 2x -5y =7 by -3 and multiply the equation 3x + 7y = -3 by 2.
Your new equations will be -6x + 15y = -21.
6x + 14y = -6
Answer Link

Otras preguntas

What is the product of 36 and 80
Explain how the presence of coal-fired electricity plants can affect the ability of lakes to support life?
what is 46% as a fraction in simplest form
I am a force canceled out by other forces on the same object what am i
How do u find the slope of (6,-10), (-15,15)
Find the value of x and KL if K is between J and L "JK=2x,KL=x+2, and JL =5x-10"
If a contractor receives payment of 1,480.00, pays 1,111.74 for labor and materials and then deducts 18% of the payment for overhead, how much profit remains?
Novel pantai kasih... Perbezaan watak utama dengan watak sampingan?? #hope dpt tlg
In a cell information that controls the production of proteins must pass from the nucleus to
if you no that 4x5=20 how can you use the commutative property to find 4×5