Add 30/70 and 21/98
30/70 + 21/98 is 9/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 98 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
30/70 = 30 × 7/70 × 7 = 210/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
21/98 = 21 × 5/98 × 5 = 105/490 - Add the two like fractions:
210/490 + 105/490 = 210 + 105/490 = 315/490 - 315/490 simplified gives 9/14
- So, 30/70 + 21/98 = 9/14
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