tylka221 tylka221
  • 12-01-2022
  • Mathematics
contestada

Systems of equations with substitution 8x+y=-2 and -5x-2y=-7

Respuesta :

jerin212223
jerin212223 jerin212223
  • 12-01-2022

Answer: x=-1 and y=6

Steps:

So two of the equations are, " 8x+y=-2" and " -5x-2y=-7 "

8x+y=-2

8x= -2-y

x= (-2-y)/8  

Now place this equation for x on the other equation.

-5 * {(-2-y)/8} -2y=-7

(10 + 5y)/8 -2y = -7

(10 + 5y  - 16y)/8 = -7

10 - 11y = -7 * 8

-11y= -56 - 10

y= - 66/-11

y= 6

Now place the value of y in the first equation

8x + 6 = -2

8x= - 2 - 6

x= -8/8

x= -1

Brainliest please if I am correct!

Answer Link

Otras preguntas

Which of these medications would be classified as a Category X substance that is not to be used during pregnancy? A Lorazepam (Ativan) B Alprazolam (Xanax) C
In terms of the acronym smart what does it mean when a goal is a measurable
What is the value of x
What is the value of the expression i0x i1x i2x i3 x i4
What molecule is metabolized in a cell to produce energy "currency" in the form of ATP?
What lesson did Walter younger learn in the story raisin in the sun with text evidence?
Which relation is a function?
What do you call each of the following changes of state: a. Solid to liquid b. Liquid to gas c. Gas to solid d. Solid to gas e. Liquid to solid f. Gas to liqui
Help me find the answer for problem number 5
Is 16% of 40 the same has 40%? Explain your reasoning