arajiv arajiv
  • 26-05-2020
  • Mathematics
contestada

Algebraically solve the system of equations 2x + y = 5 and 5x − 2y = 8.

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 26-05-2020

Answer:

x=2, y=1

Step-by-step explanation:

2x + y = 5

5x − 2y = 8.

Multiply the first equation by 2

2( 2x + y) = 5*2

4x +2y = 10

Add this to the 2nd equation to eliminate y

4x+2y = 10

5x -2y = 8

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

9x = 18

Divide by 9

9x/9 = 18/9

x = 2

Now find y

2x+y = 5

2(2)+y = 5

4+y = 5

Subtract 4 from each side

y = 5-4

y =1

Answer Link

Otras preguntas

Which action indicates a hockey players playing defense
Question 6 cf 20 Where was library. the Santa Raga
True or false the Shang dynasty is considered to be the first true dynasty of China
what is the answer to 5 - 2x < 7=??? -you can keep it simple(no work is needed)
______means that material has spaces that allow water to seep through it.
can someone please answer number 18 Thanks!!!!!!!!!!!!!!!! I might mark you as brainliest ! SHOW YOUR WORK.
The economic security of the Inca Empire was based on a. intensive maize farming. B. a horizontal compilation of terra firma. C. extensive trade with the Aztec
Tell the order of vessels a blood cell travels through
who was the first president ok america
what is the answer to this problem