Add 28/35 and 21/98
28/35 + 21/98 is 71/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 98 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 35 × 14 = 490,
28/35 = 28 × 14/35 × 14 = 392/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
21/98 = 21 × 5/98 × 5 = 105/490 - Add the two like fractions:
392/490 + 105/490 = 392 + 105/490 = 497/490 - 497/490 simplified gives 71/70
- So, 28/35 + 21/98 = 71/70
In mixed form: 11/70
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