Add 81/4 and 90/45
1st number: 20 1/4, 2nd number: 2 0/45
81/4 + 90/45 is 89/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
81/4 = 81 × 45/4 × 45 = 3645/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
90/45 = 90 × 4/45 × 4 = 360/180 - Add the two like fractions:
3645/180 + 360/180 = 3645 + 360/180 = 4005/180 - 4005/180 simplified gives 89/4
- So, 81/4 + 90/45 = 89/4
In mixed form: 221/4
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