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21 April, 20:42

2x-y=17

X-y = 10

Using the elimination method

+2
Answers (2)
  1. 21 April, 21:02
    0
    2x-y=17

    x-y=10

    2x-y=17

    -2 (x-y) = - 2 (10)

    -2x+2y=-20

    (cross out the - 2x's)

    -y=17

    +2y=-20

    y=3

    (plug 3 into y to find x)

    (3) - y=10

    -y=7

    y=-7

    x=3 & y=-7
  2. 21 April, 21:10
    0
    Easy just subtract 2x from each side then divide
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