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21 December, 15:40

What is the value of x in the solution to the following system of linear equations?

y=x-1

y=2x+1

step by step

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Answers (1)
  1. 21 December, 17:53
    0
    1. Insert "x-1", where it says "y". Now you have:

    x-1=2x+1

    2. Subtract variable x from both sides. Now you have:

    -1 = 1x+1

    3. Subtract 1 from both sides. Now you have:

    -2 = 1x

    4. Divide 1 from both sides. Now you have:

    -2=x (switch it to) x=-2

    Answer: x=-2
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