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9 April, 22:18

Using elimination process what is the answer for

14x+2y=18

-7x-4=9

use steps

+1
Answers (1)
  1. 9 April, 22:30
    0
    Step 1; multiple equation 2 by - 2: 14x+8y=-18

    step2: subtract this new equation from equation 1 to eliminate x:

    2y-8y=18 - (-18)

    -6y=36

    y=-6

    step 3: substitute y=6 in equation 2: - 7x-4 * (-6) = 9, - 7x=-15, x=15/7
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