Add 30/90 and 81/4
1st number: 30/90, 2nd number: 20 1/4
30/90 + 81/4 is 247/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
30/90 = 30 × 2/90 × 2 = 60/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
81/4 = 81 × 45/4 × 45 = 3645/180 - Add the two like fractions:
60/180 + 3645/180 = 60 + 3645/180 = 3705/180 - 3705/180 simplified gives 247/12
- So, 30/90 + 81/4 = 247/12
In mixed form: 207/12
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