londielon
londielon londielon
  • 02-04-2020
  • Mathematics
contestada

- 8x-10y=20
-8x - 6y=-4

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 02-04-2020

Answer:

x=5 y =-6

Step-by-step explanation:

- 8x-10y=20

-8x - 6y=-4

Multiply the first equation by -1

8x +10y=-20

Add this to the second equation

8x +10y=-20

-8x - 6y=-4

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

      4y = -24

Divide each side by 4

4y/4 = -24/4

y = -6

Now we need to solve for x

8x +10(-6) = -20

8x -60 = -20

Add 60 to each side

8x -60+60 = -20+60

8x = 40

Divide each side by 8

8x/8 = 40/8

x =5

Answer Link

Otras preguntas

The FIRST president of Russia elected directly by the people in relatively free elections was?
What number is 31 less than fifty two million and four
Work out 5/8−2/5 Give your answer in its simplest form.
compare and contrast the structure of the daughter cells with that of the original parent cell
Whats the defenition of heat ?
Express the number 20000 as a single digit integer times a power of 10
What is 1/2+3/4= ...........
Which is true of living things? a. Their chemical balances are maintained by acid-base reactions b. They are damaged when they are exposed to any kind of acid c
How did flooding rivers contribute to the beginning of farming communities? a. They irrigated the crops when they overflowed. b. They created a marshy environm
in a direct democracy who votes on government policy