vivi1944 vivi1944
  • 09-09-2019
  • Mathematics
contestada

4x -9y= -42
x+5y=4
Solve by elimination

Respuesta :

lthorve lthorve
  • 09-09-2019
This is what I got as the answer
Ver imagen lthorve
Answer Link
RealNfw
RealNfw RealNfw
  • 09-09-2019

Answer:

x = -6 and y = 2

Step-by-step explanation:

4x-9y = -42

x+5y = 4

4x-9y = -42

4x + 20y = 16

Take them away from each other.

-29y = -58

Find what one y is by dividing.

-58 / -29 = 2

y = 2

Substitute back into original.

x + 10(5*y) = 4

Take 10 away to find x.

x = -6

Check if answer is correct.

4x - 9y = -42

-24 - 18 = -42

Final Answer: x = -6 and y = 2

Answer Link

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