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Add 18/70 and 30/40

18/70 + 30/40 is 141/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 40 is 280
  2. For the 1st fraction, since 70 × 4 = 280,
    18/70 = 18 × 4/70 × 4 = 72/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    30/40 = 30 × 7/40 × 7 = 210/280
  4. Add the two fractions:
    72/280 + 210/280 = 72 + 210/280 = 282/280
  5. 282/280 simplified gives 141/140
  6. So, 18/70 + 30/40 = 141/140
    In mixed form: 11/140

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