Add 81/90 and 63/40
1st number: 81/90, 2nd number: 1 23/40
81/90 + 63/40 is 99/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
81/90 = 81 × 4/90 × 4 = 324/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
63/40 = 63 × 9/40 × 9 = 567/360 - Add the two like fractions:
324/360 + 567/360 = 324 + 567/360 = 891/360 - 891/360 simplified gives 99/40
- So, 81/90 + 63/40 = 99/40
In mixed form: 219/40
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