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20 April, 14:12

Solve the linear system of equations using the linear combination method. 8a-4b=20

5a-8b=62

Enter your answers in the boxes.

a =

b =

+2
Answers (1)
  1. 20 April, 18:02
    0
    -2 (8a - 4b = 20)

    5a - 8b = 62

    -16a + 8b = - 40

    5a - 8b = 62

    -11a = 22

    a = - 2

    5 (-2) - 8b = 62

    -10-8b = 62

    -8b = 72

    b = - 9
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