Add 21/98 and 45/70
21/98 + 45/70 is 6/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 70 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 70 × 7 = 490,
45/70 = 45 × 7/70 × 7 = 315/490 - Add the two like fractions:
105/490 + 315/490 = 105 + 315/490 = 420/490 - 420/490 simplified gives 6/7
- So, 21/98 + 45/70 = 6/7
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