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Add 90/48 and 21/15

1st number: 1 42/48, 2nd number: 1 6/15

90/48 + 21/15 is 131/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 48 and 15 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 48 × 5 = 240,
    90/48 = 90 × 5/48 × 5 = 450/240
  3. Likewise, for the 2nd fraction, since 15 × 16 = 240,
    21/15 = 21 × 16/15 × 16 = 336/240
  4. Add the two like fractions:
    450/240 + 336/240 = 450 + 336/240 = 786/240
  5. 786/240 simplified gives 131/40
  6. So, 90/48 + 21/15 = 131/40
    In mixed form: 311/40

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