Add 7/80 and 9/21
7/80 + 9/21 is 289/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 21 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
7/80 = 7 × 21/80 × 21 = 147/1680 - Likewise, for the 2nd fraction, since 21 × 80 = 1680,
9/21 = 9 × 80/21 × 80 = 720/1680 - Add the two like fractions:
147/1680 + 720/1680 = 147 + 720/1680 = 867/1680 - 867/1680 simplified gives 289/560
- So, 7/80 + 9/21 = 289/560
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