Matematika

Pertanyaan

tentukan hasil dari
a. 2/15-1/2+3/10
b. 3/7+4/21-13/14
c. 4 2/5- 1 1/3+ 2 3/4
d. 10 1/4+ 1 2/3+ 20 7/8

2 Jawaban

  • a. 2/15 - 1/2 + 3/10 = 4/30 - 15/30 + 9/30 = -2/30
    b. 3/7 + 4/21 - 13/14 = 18/42 + 8/42 - 39/42 = -13/42
    c. 4 2/5 - 1 1/3 + 2 3/4 = 24/60 - 20/60 + 45/60 = 5 49/60
    d. 10 1/4 + 1 2/3 + 20 7/8 = 31 6/24 + 16/24 + 21/24 = 31 43/24 = 32 19/24
  • A. 2/15 - 1/2 + 3/10 = 4/30 - 15/30 + 9/30 = -11/30 + 9/30 = -2/30

    B. 3/7 + 4/21 - 13/14 = 18/42 + 8/42 - 39/42 = 26/43 - 39/42 = -13/42

    C. 4 2/5 - 1 1/3 + 2 3/4 = 22/5 - 4/3 + 11/4 = 264/60 - 80/60 + 165/60 = 184/60 + 165/60 = 349/60 = 5 49/60

    D. 10 1/4 + 1 2/3 + 20 7/8 = 41/4 + 5/3 + 167/8 = 246/24 + 40/24 + 501/24 = 787/24 = 32 19/24

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