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Add 42/90 and 45/64

42/90 + 45/64 is 1123/960.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 64 is 2880

    Next, find the equivalent fraction of both fractional numbers with denominator 2880
  2. For the 1st fraction, since 90 × 32 = 2880,
    42/90 = 42 × 32/90 × 32 = 1344/2880
  3. Likewise, for the 2nd fraction, since 64 × 45 = 2880,
    45/64 = 45 × 45/64 × 45 = 2025/2880
  4. Add the two like fractions:
    1344/2880 + 2025/2880 = 1344 + 2025/2880 = 3369/2880
  5. 3369/2880 simplified gives 1123/960
  6. So, 42/90 + 45/64 = 1123/960
    In mixed form: 1163/960

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