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5 May, 01:28

System of equations

y=2x-3

x+y=18

+3
Answers (1)
  1. 5 May, 01:39
    0
    2x-3=-1x+18

    +1x + 1x

    3x-3=18

    +3 + 3

    3x=21

    divide both sides by 3

    x=7
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