odinmorton
odinmorton odinmorton
  • 01-01-2019
  • Mathematics
contestada

solve this system of linear equations. Separate the x- and y-values with a comma. 20x = -58 - 2y 17x = -49 - 2y

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 01-01-2019

Answer:

(-3,1)

Step-by-step explanation:

20x = -58 - 2y

17x = -49 - 2y

I will use elimination to solve this system of equations

Multiply the second equation by -1

-1* 17x = -1 *(-49 - 2y)

-17x = -49 +2y

Add the first equation and the modified second equation

20x = -58 - 2y

-17x = +49 +2y

-----------------------

3x   = -9

Divide each side by 3

3x/3 = -9/3

x=-3

But we still need to find y

17x = -49 -27

17*-3 =-49 -2y

-51 = -49 -2y

Add 49 to each side

-51+49 = -49+49 -2y

-2 = -2y

Divide by -2

-2/-2 = -2y/-2

1 =y

Answer Link

Otras preguntas

what is 56 divided by 19
which supporting detail from Night by Elie Wiesel reflects the above theme best
A force of 1500 pounds drags a truck 40 feet in 20 seconds. How much work is accomplished? How much power was required?
Which compound when stirred in water will not pass through filter paper? a. NaCl b. NH4S
If a cart of 4kg mass has a force of 8 newtons exerted on it what is it's acceleration
79, 79, 91, 91, 91, 91, 98, 98, 118, 130, what is the mean median and mode?
what is an example of a descriptive essay
How does juliet want Romeo to prove his love
The political atmosphere at the New Year’s Day tournament can best be described as— a. unsettled c. cooperative b. resigned d. treacherous
What does -3/8>-1 indicate about the positions of -3/8 and -1 on the number line?