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Add 9/70 and 30/80

9/70 + 30/80 is 141/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 80 is 560
  2. For the 1st fraction, since 70 × 8 = 560,
    9/70 = 9 × 8/70 × 8 = 72/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    30/80 = 30 × 7/80 × 7 = 210/560
  4. Add the two fractions:
    72/560 + 210/560 = 72 + 210/560 = 282/560
  5. 282/560 simplified gives 141/280
  6. So, 9/70 + 30/80 = 141/280

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