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10 December, 09:42

Solve the system by elimination

x+3y=5

-x-y=-3

+4
Answers (1)
  1. 10 December, 12:21
    0
    Answer: y = 4

    x = - 7

    Step-by-step explanation:

    1.) x + 3y = 5

    -x - y=3

    2.) x + 3y = 5

    - 3y - 3y

    3.) x = 5-3y

    4.) - (5-3y) - y=3

    5.) - 5+3y-y=3

    6.) 2y-5=3

    7.) 2y-5=3

    +5 + 5

    8.) 2y=8

    9.) 2y/2 = 8/2

    10.) y = 8/2

    11.) y=4

    12.) x+3 (4) = 5

    13.) x+12=5

    14.) x+12=5

    -12 - 12

    15.) x = - 7

    answer.) y = 4

    x = - 7
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