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

what's the value of given expression :[tex] \sqrt{9 \times 9 \times 999999 \times 22222 \times 0} [/tex]​
What does the product of the two circled numbers represent? ​
Given that 5 miles is 8 km, convert 19.2 miles to km.​
Fine the midpoint of the line segment joining points A and B. A(4,-7); B(4,1)
Help would be amazing right now!
A rental car agency charges $200.00 per week plus $0.15 per mile to rent a car. How many miles can you travel in one week for $288.50?
how are electric fuses rated
A car increases its velocity from zero to 68 km/h in 12 s. What is its acceleration? Answer in units of m/s^2
martin pidio 1/8 de kg de clavos de 1/2 pulgada si la bascula es digital y pesa en kilogramos ¿cuantos tienes q marcar en este caso?
Solve the system using elimination. 4x +12y = 12 4x - 12y = 12 The solution is (Type an ordered pair.)