Matematika

Pertanyaan

Selesaikanlah 3k-(5k+7)=(8+2k)-3(2k-5)+30

1 Jawaban

  • 3k - (5k + 7) = (8 + 2k) - 3 (2k - 5) + 30
    3k - 5k - 7 = 8 + 2k - 6k + 15 + 30
    -2k - 7 = -4k + 53
    -2k + 4k = 53 + 7
    2k = 60
    k = 60/2
    k = 30

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