Add 1/90 and 20/28
1/90 + 20/28 is 457/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
1/90 = 1 × 14/90 × 14 = 14/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
20/28 = 20 × 45/28 × 45 = 900/1260 - Add the two like fractions:
14/1260 + 900/1260 = 14 + 900/1260 = 914/1260 - 914/1260 simplified gives 457/630
- So, 1/90 + 20/28 = 457/630
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