Add 18/84 and 15/30
18/84 + 15/30 is 5/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
18/84 = 18 × 5/84 × 5 = 90/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
15/30 = 15 × 14/30 × 14 = 210/420 - Add the two like fractions:
90/420 + 210/420 = 90 + 210/420 = 300/420 - 300/420 simplified gives 5/7
- So, 18/84 + 15/30 = 5/7
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