Add 84/98 and 21/70
84/98 + 21/70 is 81/70.
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,
84/98 = 84 × 5/98 × 5 = 420/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
21/70 = 21 × 7/70 × 7 = 147/490 - Add the two like fractions:
420/490 + 147/490 = 420 + 147/490 = 567/490 - 567/490 simplified gives 81/70
- So, 84/98 + 21/70 = 81/70
In mixed form: 111/70
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