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

Pls answer 20 pt reward!!!!
the last time i visited aswan ............ in 2017
I need help please !!!
2/3 of 2 how do i get this answer
how long does it take for the ball to travel 20 yards to the wide recevier if they are running 21 mph and the ball weighs 15 ounces
National press, literature, and modern Western education have played pivotal roles in fostering the development of nationalism in various societies. The nationa
I need help please !!!
The length of a cinema hall is 20 m and breadth is 16 m. The sum of the areas of floor and flat roof is equal to the areas of four walls. Find the height of the
Why sugar is an organic compound
for what value of k, the expression x²+kxy²+9y² becomes a perfect square​