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25 August, 13:25

Solve the system of equations by substitution. What is the solution for x?

2x + y = 1

4x + 2y = - 2

+1
Answers (1)
  1. 25 August, 13:48
    0
    Subsituteion

    solve for y

    2x+y=1

    minus 2x

    y=1-2x

    sub 1-2x for y

    actualy, divide 2nd equation by 2

    2x+y=-1

    sub 1-2x for y

    2x+1-2x=-1

    1=-1

    false

    no solution

    paralell lines
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