Respuesta :

mhanifa

Answer:

  • (2, -2)

Step-by-step explanation:

Given system:

  • y + 4 = x
  • 10x + 2y = 16

Substitute x into the second equation:

  • 10(y + 4) + 2y = 16
  • 10y + 40 + 2y = 16
  • 12y = -24
  • y = -2

Find x:

  • x = -2 + 4
  • x = 2

Answer:

x = 2 and y = -2

Step-by-step explanation:

Given system :-

y + 4 = x

10x + 2y = 16

Solve the system by substitution:-

Let,

y + 4 = x ...(1)

10x + 2y = 16 ...(2)

Solve for y;

Substitute y + 4 as x in the eq.(2)

10( y + 4 ) + 2y = 16

  • Distribute 10.

10y + 40 + 2y = 16

  • Combine like terms.

12y + 40 = 16

  • Move constant to the right-hand side and change their sign.

12y = 16 - 40

  • Subtract 16 from -40.

12y = -24

  • Divide both side by 12.

12y / 12 = -24/12

Hence, y = -2

Solve for x.

  • Substitute the value of y in eq.(1)

-2 + 4 = x

  • Add -2 and 4.

Hence, 2 = x

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