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Explain in detail how to solve the system of equations using Substitution. What is the soltion? How can you verify your solution? (Use complete sentences.)
x + y = 12
X = Y -2
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Respuesta :

irjt

Answer:

x=5, y=7

Step-by-step explanation:

Substitute (y-2) for x in the first equation because x=y-2.

(y-2) + y = 12

2y - 2 = 12

2y = 14

y = 7

Now substitute 7 for y in any of the equations.

x=7-2

x=5

To check your work, plug 5 for x and 7 for y into both equations.

5 + 7 = 12

^That is true.

5 = 7-2

^This is also true.

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