pukhalskiya
pukhalskiya pukhalskiya
  • 24-05-2022
  • Mathematics
contestada

Solve the following systems using the elimination method.
10x-8y=-6
-10x+3y=21

Respuesta :

oliversai
oliversai oliversai
  • 24-05-2022

Answer:

y= -3, x= -3

Step-by-step explanation:

Add the 2 equations to get rid of x:

-5y = 15

Divide both sides by 5:

y = -3

Substitute value of y into an equation to get x (I chose the first one

10x-8y = -6)

10x-8(-3) = -6

10x+24 = -6

Subtract both sides by 24:

10x = -30

Divide both sides by 10:

x = -3

Answer Link
KJennett KJennett
  • 24-05-2022
Subtract 10x-10x to cancel each other out
-8y+3y=-5y
-6+21=15
15/-5
Answer: -3
Answer Link

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