pamelacruz455 pamelacruz455
  • 10-04-2017
  • Mathematics
contestada

X=y-1
X+2y=8
Solve each system by substituation

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Аноним Аноним
  • 10-04-2017
The answer is
y=3
x=2

Also, substitution is just a type of method to solve for x and y.
Tell me if you want the steps for solving it
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bcalle
bcalle bcalle
  • 10-04-2017
Since the first equation is already set up as x= use it to plug into the second equation.
x + 2y = 8
(y -1) + 2y = 8
y -1 + 2y = 8
3y -1 = 8
Add 1 to both sides
3y = 9
Divide both sides by 3
y = 3
Use x = y - 1 to solve for x
x = 3 - 1
x = 2
(2,3)
Answer Link

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