Add 72/84 and 8/80
72/84 + 8/80 is 67/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 84 × 20 = 1680,
72/84 = 72 × 20/84 × 20 = 1440/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
8/80 = 8 × 21/80 × 21 = 168/1680 - Add the two like fractions:
1440/1680 + 168/1680 = 1440 + 168/1680 = 1608/1680 - 1608/1680 simplified gives 67/70
- So, 72/84 + 8/80 = 67/70
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