Add 21/45 and 81/4
1st number: 21/45, 2nd number: 20 1/4
21/45 + 81/4 is 1243/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
21/45 = 21 × 4/45 × 4 = 84/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
81/4 = 81 × 45/4 × 45 = 3645/180 - Add the two like fractions:
84/180 + 3645/180 = 84 + 3645/180 = 3729/180 - 3729/180 simplified gives 1243/60
- So, 21/45 + 81/4 = 1243/60
In mixed form: 2043/60
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