Add 3/70 and 21/80
3/70 + 21/80 is 171/560.
Steps for adding fractions
- 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 - For the 1st fraction, since 70 × 8 = 560,
3/70 = 3 × 8/70 × 8 = 24/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
21/80 = 21 × 7/80 × 7 = 147/560 - Add the two like fractions:
24/560 + 147/560 = 24 + 147/560 = 171/560 - So, 3/70 + 21/80 = 171/560
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