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Add 21/70 and 90/16

1st number: 21/70, 2nd number: 5 10/16

21/70 + 90/16 is 237/40.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 16 is 560
  2. For the 1st fraction, since 70 × 8 = 560,
    21/70 = 21 × 8/70 × 8 = 168/560
  3. Likewise, for the 2nd fraction, since 16 × 35 = 560,
    90/16 = 90 × 35/16 × 35 = 3150/560
  4. Add the two fractions:
    168/560 + 3150/560 = 168 + 3150/560 = 3318/560
  5. 3318/560 simplified gives 237/40
  6. So, 21/70 + 90/16 = 237/40
    In mixed form: 537/40

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