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Add 42/72 and 2/70

42/72 + 2/70 is 257/420.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 70 is 2520
  2. For the 1st fraction, since 72 × 35 = 2520,
    42/72 = 42 × 35/72 × 35 = 1470/2520
  3. Likewise, for the 2nd fraction, since 70 × 36 = 2520,
    2/70 = 2 × 36/70 × 36 = 72/2520
  4. Add the two fractions:
    1470/2520 + 72/2520 = 1470 + 72/2520 = 1542/2520
  5. 1542/2520 simplified gives 257/420
  6. So, 42/72 + 2/70 = 257/420

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