Add 1/28 and 21/45
1/28 + 21/45 is 211/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
1/28 = 1 × 45/28 × 45 = 45/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
21/45 = 21 × 28/45 × 28 = 588/1260 - Add the two like fractions:
45/1260 + 588/1260 = 45 + 588/1260 = 633/1260 - 633/1260 simplified gives 211/420
- So, 1/28 + 21/45 = 211/420
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