Add 21/98 and 42/10
1st number: 21/98, 2nd number: 4 2/10
21/98 + 42/10 is 309/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 10 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
21/98 = 21 × 5/98 × 5 = 105/490 - Likewise, for the 2nd fraction, since 10 × 49 = 490,
42/10 = 42 × 49/10 × 49 = 2058/490 - Add the two like fractions:
105/490 + 2058/490 = 105 + 2058/490 = 2163/490 - 2163/490 simplified gives 309/70
- So, 21/98 + 42/10 = 309/70
In mixed form: 429/70
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