Add 81/90 and 70/98
81/90 + 70/98 is 113/70.
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,
70/98 = 70 × 45/98 × 45 = 3150/4410 - Add the two like fractions:
3969/4410 + 3150/4410 = 3969 + 3150/4410 = 7119/4410 - 7119/4410 simplified gives 113/70
- So, 81/90 + 70/98 = 113/70
In mixed form: 143/70
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