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23 September, 15:27

5x - 2y = 6

x = 5 - y

Solve the system of equations by substitution.

(16/7, 19/7)

(-4/3, 19/3)

no solution

coincident

+5
Answers (1)
  1. 23 September, 18:52
    0
    Sub

    x=5-y

    nice

    sub 5-y for every x you see in other equation

    5 (5-y) - 2y=6

    25-5y-2y=6

    25-7y=6

    minus 25 both sides

    -7y=-19

    divide both sides by - 7

    y=19/7

    sub back

    x=5-y

    x=5-19/7

    x=35/7-19/7

    x=16/7

    (16/7,19/7)

    first one
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