julitameiardid
julitameiardid julitameiardid
  • 10-02-2022
  • Mathematics
contestada

solve system of equations:

-8x - 10y = 10
3x + 2y = 12

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 10-02-2022

Answer:

x=10

y = -9

Step-by-step explanation:

-8x - 10y = 10

3x + 2y = 12

Multiply the second equation by 5

5(3x + 2y) = 12*5

15x+10y = 60

Add this to the first equation to eliminate y

-8x - 10y = 10

15x+10y = 60

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

7x  + 0y  = 70

Divide by 7

7x/7 = 70/7

x = 10

Now find y

3x+2y = 12

3(10) +2y = 12

30 +2y =12

Subtract 30 from each side

2y = 12-30

2y = -18

Divide by 2

2y/2=-18/2

y = -9

Answer Link

Otras preguntas

The black graph is the graph of y=f(x). Choose the equation for the red graph.
What are England's renaissance centers
A triangle with an angle greater than 180 degrees
A car travels 150 miles on 12 gallons of gasoline. How many gallons of gasoline are needed to travel 500 miles?
thomas edison is known for the successful development of which of the following
Keisha is working on a math 2 worksheet with 50 problems she has completed 20 problems in 25 minutes if she continues at the same Pace what will the total time
why shouldn’t romeo and juliet be banned?
please help me with this math question!!!!!
Effective dialogue always either: A. Creates a surprise ending or a strong climax B. Defines relationships between character or between character and audience
list three differences between two-year and four-year colleges