Add 3/80 and 20/70
3/80 + 20/70 is 181/560.
Steps for adding fractions
- 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 - For the 1st fraction, since 80 × 7 = 560,
3/80 = 3 × 7/80 × 7 = 21/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
20/70 = 20 × 8/70 × 8 = 160/560 - Add the two like fractions:
21/560 + 160/560 = 21 + 160/560 = 181/560 - So, 3/80 + 20/70 = 181/560
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