jaydenkelly816 jaydenkelly816
  • 15-12-2020
  • Mathematics
contestada

Solve the system by substitution.
x + 6y = -2
-x= 3y - 10

Respuesta :

NgShiYin
NgShiYin NgShiYin
  • 15-12-2020

Answer:

x = 22, y = -4

Step-by-step explanation:

x + 6y = -2 --- Equation 1

-x = 3y - 10 --- Equation 2

Equation 2 ×(-1): x = -3y + 10 --- Equation 3

Substitute x = -3y + 10 into Equation 1:

x + 6y = -2

-3y + 10 + 6y = -2

3y + 10 = -2

3y = -2-10

    = -12

y = -12 ÷ 3

y = -4

Substitute y = -4 into Equation 3:

x = -3y + 10

x = -3(-4) + 10

  = 12 + 10

x = 22

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