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18 December, 16:16

1.

Solve the following system using substitution: y = 4x - 7 and y = 2x + 9

(25,8)

(8,25)

(0,8)

2.

Solve each system using elimination: x + y = 10 and - x - 2y = - 14

(-4, 6)

(6, 4)

(-14, 10)

+5
Answers (1)
  1. 18 December, 17:05
    0
    1) 4x-7=2x+9

    Subtract 2x

    2x-7 = 9

    Add 7

    2x=16

    X = 8

    2 (8) + 9=25

    (8,25)

    X+y=10

    -X-2y=-14

    -y = - 4

    Y=4

    X+4=10

    X=6

    (6,4)
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