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5 July, 18:10

Solve the system of equations using substitution. Show your work.

d + e = 6

d - e = 4

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Answers (2)
  1. 5 July, 18:33
    0
    d+e = 6 d=5 and e=1

    d-e=4

    Step-by-step explanation:

    5+1=6

    5-1=4

    simple math you have to think hard to get it right might look easy but it is not
  2. 5 July, 19:03
    0
    the solution is (1, 5)

    Step-by-step explanation:

    If d - e = 4, then d = e + 4. Substitute e + 4 for d in the first equation:

    d + e = 6 → e + 4 + e = 6. Then 2e = 2, and e = 1.

    Subbing 1 for e in the second equation, we get d + e = 6, or d + 1 = 6.

    Thus, d = 5, and the solution is (1, 5)
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