Add 1/90 and 72/84
1/90 + 72/84 is 547/630.
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,
1/90 = 1 × 14/90 × 14 = 14/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
72/84 = 72 × 15/84 × 15 = 1080/1260 - Add the two like fractions:
14/1260 + 1080/1260 = 14 + 1080/1260 = 1094/1260 - 1094/1260 simplified gives 547/630
- So, 1/90 + 72/84 = 547/630
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