Matematika

Pertanyaan

nilai a + 10 = ...
a.25
b.35
c.45
d.75
nilai a + 10 = ... a.25 b.35 c.45 d.75

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1 Jawaban

  • 280 = (180 - (a + 13)) + (180 - (2a - 8))
    180 - a - 13 + 180 - 2a + 8 = 280
    355 - 3a = 280
    3a = 355 - 280 = 75
    a = 25

    a+10 = 25+10 = 35 (B)

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