Add 72/90 and 15/84
72/90 + 15/84 is 137/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
72/90 = 72 × 14/90 × 14 = 1008/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
15/84 = 15 × 15/84 × 15 = 225/1260 - Add the two like fractions:
1008/1260 + 225/1260 = 1008 + 225/1260 = 1233/1260 - 1233/1260 simplified gives 137/140
- So, 72/90 + 15/84 = 137/140
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