Add 81/90 and 20/98
81/90 + 20/98 is 541/490.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 98 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
81/90 = 81 × 49/90 × 49 = 3969/4410 - Likewise, for the 2nd fraction, since 98 × 45 = 4410,
20/98 = 20 × 45/98 × 45 = 900/4410 - Add the two like fractions:
3969/4410 + 900/4410 = 3969 + 900/4410 = 4869/4410 - 4869/4410 simplified gives 541/490
- So, 81/90 + 20/98 = 541/490
In mixed form: 151/490
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