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2 May, 04:33

Solve the system of equation 2r+2s=50 and 2r-s=17

a. r=14, s=11

b. r=-8, s=33

c. r=3, s=11

d. r=25, s=33

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Answers (1)
  1. 2 May, 04:57
    0
    2r + 2s = 50

    2r - 1s = 17

    3s = 33

    3 3

    s = 11

    2r - s = 17

    2r - 11 = 17

    + 11 + 11

    2r = 28

    2 2

    r = 14

    (r, s) = (14, 11)
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