Add 7/21 and 15/30
7/21 + 15/30 is 5/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
7/21 = 7 × 10/21 × 10 = 70/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
15/30 = 15 × 7/30 × 7 = 105/210 - Add the two like fractions:
70/210 + 105/210 = 70 + 105/210 = 175/210 - 175/210 simplified gives 5/6
- So, 7/21 + 15/30 = 5/6
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