Add 81/40 and 18/90
1st number: 2 1/40, 2nd number: 18/90
81/40 + 18/90 is 89/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
81/40 = 81 × 9/40 × 9 = 729/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
18/90 = 18 × 4/90 × 4 = 72/360 - Add the two like fractions:
729/360 + 72/360 = 729 + 72/360 = 801/360 - 801/360 simplified gives 89/40
- So, 81/40 + 18/90 = 89/40
In mixed form: 29/40
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