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Add 40/90 and 21/48

40/90 + 21/48 is 127/144.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 48 is 720
  2. For the 1st fraction, since 90 × 8 = 720,
    40/90 = 40 × 8/90 × 8 = 320/720
  3. Likewise, for the 2nd fraction, since 48 × 15 = 720,
    21/48 = 21 × 15/48 × 15 = 315/720
  4. Add the two fractions:
    320/720 + 315/720 = 320 + 315/720 = 635/720
  5. 635/720 simplified gives 127/144
  6. So, 40/90 + 21/48 = 127/144

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