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27 March, 19:43

Solve the following:

y = x + 3

4x + y = 18

(6, 3)

(3, 6)

(-3, 6)

(3, - 6)

+5
Answers (2)
  1. 27 March, 19:49
    0
    B (3; 6)

    Step-by-step explanation:

    y = x + 3

    4x + y = 18

    4x + (x + 3) = 18

    5x = 18 - 3

    5x = 15

    x = 3

    y = x + 3

    y = 3 + 3

    y = 6
  2. 27 March, 20:08
    0
    (3,6)

    Step-by-step explanation:

    We can substitute y for x+3 in the second equation

    4x + x + 3 = 18

    5x = 15

    x=3

    Plug x back into the equation

    y = 3 + 3

    y = 6
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