Add 21/49 and 15/70
21/49 + 15/70 is 9/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 49 × 10 = 490,
21/49 = 21 × 10/49 × 10 = 210/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
15/70 = 15 × 7/70 × 7 = 105/490 - Add the two like fractions:
210/490 + 105/490 = 210 + 105/490 = 315/490 - 315/490 simplified gives 9/14
- So, 21/49 + 15/70 = 9/14
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