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Add 48/70 and 42/80

48/70 + 42/80 is 339/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 70 × 8 = 560,
    48/70 = 48 × 8/70 × 8 = 384/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    42/80 = 42 × 7/80 × 7 = 294/560
  4. Add the two like fractions:
    384/560 + 294/560 = 384 + 294/560 = 678/560
  5. 678/560 simplified gives 339/280
  6. So, 48/70 + 42/80 = 339/280
    In mixed form: 159/280

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