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yulyashka [42]
3 years ago
12

I dont know the answer to this question I dont know what I can put for the x and the y

Mathematics
2 answers:
harina [27]3 years ago
5 0

Answer:

  (x, y) = (-4, 4)

Step-by-step explanation:

You find the values of x and y by working the problem using any of the methods of solving simultaneous equations that you have been taught.

Here, you observe that the y-coefficients are the same in each equation. That means you can cancel the y-terms by subtracting one equation from the other.

  (7x +6y) -(4x +6y) = (-4) -(8)

  3x = -12 . . . . simplify

  x = -4 . . . . . . divide by 3

Now, you can substitute this into either equation to find y.

 4(-4) +6y = 8

  6y = 24 . . . . . . . . add 16

  y = 4 . . . . . . . . divide by 6

The solution to this system of equation is ...

  • x = -4
  • y = 4
vivado [14]3 years ago
3 0

<u>Answer:</u>

  • x = -4
  • y = 4

<u>Solution:</u>

  • => 7x + 6y = -4

             4x + 6y = 8

  • => 3x = -12
  • => x = -4

<u>Now, let's substitute the value of x into an equation to find the value of y.</u>

  • 7x + 6y = -4
  • => 7(-4) + 6y = -4
  • => -28 + 6y = -4
  • => 6y = -4 + 28
  • => 6y = 24
  • => y = 4

<u>Let's check our answer using the second equation.</u>

<u>Check:</u>

  • 4x + 6y = 8
  • 4(-4) + 6(4) = 8
  • => -16 + 24 = 8
  • => 8 = 8

Hence, this is proven correct.

Hoped this helped.

BrainiacUser1357

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