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Add 7/45 and 4/42

7/45 + 4/42 is 79/315.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 42 is 630
  2. For the 1st fraction, since 45 × 14 = 630,
    7/45 = 7 × 14/45 × 14 = 98/630
  3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
    4/42 = 4 × 15/42 × 15 = 60/630
  4. Add the two fractions:
    98/630 + 60/630 = 98 + 60/630 = 158/630
  5. 158/630 simplified gives 79/315
  6. So, 7/45 + 4/42 = 79/315

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