Add 15/30 and 8/21
15/30 + 8/21 is 37/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
15/30 = 15 × 7/30 × 7 = 105/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
8/21 = 8 × 10/21 × 10 = 80/210 - Add the two like fractions:
105/210 + 80/210 = 105 + 80/210 = 185/210 - 185/210 simplified gives 37/42
- So, 15/30 + 8/21 = 37/42
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