Matematika

Pertanyaan

nilai b=.....
A. 23
B. 25
C. 42
D. 65
nilai b=..... A. 23 B. 25 C. 42 D. 65

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1 Jawaban

  • 180° = (a° + b°) + 5a
    180° = 65° + 5a
    180 – 65 = 5a
    115 = 5a
    a = 23

    65 = a + b
    65 – 23 = b
    42 = b

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