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Add 8/4 and 21/70

1st number: 2 0/4, 2nd number: 21/70

8/4 + 21/70 is 23/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 70 is 140
  2. For the 1st fraction, since 4 × 35 = 140,
    8/4 = 8 × 35/4 × 35 = 280/140
  3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
    21/70 = 21 × 2/70 × 2 = 42/140
  4. Add the two fractions:
    280/140 + 42/140 = 280 + 42/140 = 322/140
  5. After reducing the fraction, the answer is 23/10
  6. In mixed form: 23/10

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