Add 21/70 and 42/98
21/70 + 42/98 is 51/70.
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,
21/70 = 21 × 7/70 × 7 = 147/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
42/98 = 42 × 5/98 × 5 = 210/490 - Add the two like fractions:
147/490 + 210/490 = 147 + 210/490 = 357/490 - 357/490 simplified gives 51/70
- So, 21/70 + 42/98 = 51/70
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