Add 9/28 and 20/90
9/28 + 20/90 is 137/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
9/28 = 9 × 45/28 × 45 = 405/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
20/90 = 20 × 14/90 × 14 = 280/1260 - Add the two like fractions:
405/1260 + 280/1260 = 405 + 280/1260 = 685/1260 - 685/1260 simplified gives 137/252
- So, 9/28 + 20/90 = 137/252
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