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22 September, 23:49

Solve.

{y=x-6

{3x+2y=8

Use the substitution method.

(0, - 6)

(4, - 2)

(3, - 3)

(14, 8)

+1
Answers (1)
  1. 23 September, 03:14
    0
    Y = x - 6 ... so sub in x - 6 for y in the other equation

    3x + 2y = 8

    3x + 2 (x - 6) = 8

    3x + 2x - 12 = 8

    3x + 2x = 8 + 12

    5x = 20

    x = 20/5

    x = 4

    y = x - 6

    y = 4 - 6

    y = - 2

    solution is (4,-2) <==
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