Add 15/70 and 8/21
15/70 + 8/21 is 25/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
15/70 = 15 × 3/70 × 3 = 45/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
8/21 = 8 × 10/21 × 10 = 80/210 - Add the two like fractions:
45/210 + 80/210 = 45 + 80/210 = 125/210 - 125/210 simplified gives 25/42
- So, 15/70 + 8/21 = 25/42
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