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4 June, 20:32

Which equation shows the substitution method being used to solve the system of linear equations?

x + y = 6

x = y + 5

A.

x + y = y + 5

B.

x + (y + 5) = 6

C.

x = (x - 6) + 5

D.

(y + 5) + y = 6

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Answers (2)
  1. 4 June, 20:45
    0
    Your answer is D. You're welcome; - ) (Not trying to sound sarcastic, just I wanted to say you're welcome now than never)
  2. 4 June, 20:58
    0
    The equation

    (y + 5) + y = 6

    shows the substitution method being used to solve the system of linear equations. So the correct option among all the options given in the question is option "D".

    For a better explanation, let us first write down the two equations given in the question.

    x + 5 = 6

    and

    x = y + 5

    Now the thing that has been done is that the value of x in the first equation has been replaced by the value of x that is given in the second equation. this is actually the substitution method of solving equations.
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