Matematika

Pertanyaan

jika besar ruas garis PR= (4x -16 ) cm, nilai x =
jika besar ruas garis PR= (4x -16 ) cm, nilai x =

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2 Jawaban

  • 4x-16= 2x+7+15
    4x-16= 2x+22
    4x-2x=16+22
    2x=38
    x=38/2
    x=19 (a)

  • (2x + 7) + 15 = 4x - 16
    2x + 22 = 4x - 16
    2x - 4x = -16 - 22
    -2x = -38
    x = -38/-2
    x = 19

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