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Add 45/80 and 40/70

45/80 + 40/70 is 127/112.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 80 × 7 = 560,
    45/80 = 45 × 7/80 × 7 = 315/560
  3. Likewise, for the 2nd fraction, since 70 × 8 = 560,
    40/70 = 40 × 8/70 × 8 = 320/560
  4. Add the two like fractions:
    315/560 + 320/560 = 315 + 320/560 = 635/560
  5. 635/560 simplified gives 127/112
  6. So, 45/80 + 40/70 = 127/112
    In mixed form: 115/112

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