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3 years ago

14

use the substitution method to solve the system of equations . choose the correct ordered pairs x+y=5 y=7 A.(12,7) B.(-12,7) C.

(-2,7) D.(2,7)

1 answer:

Alex3 years ago

4 0

Answer:

<em>C. (-2, 7)</em>

Step-by-step explanation:

Put y = 7 to the equation x + y = 5:

x + 7 = 5 <em>subtract 7 from both sides</em>

x = -2

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