Add 81/72 and 72/30
1st number: 1 9/72, 2nd number: 2 12/30
81/72 + 72/30 is 141/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
81/72 = 81 × 5/72 × 5 = 405/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
72/30 = 72 × 12/30 × 12 = 864/360 - Add the two like fractions:
405/360 + 864/360 = 405 + 864/360 = 1269/360 - 1269/360 simplified gives 141/40
- So, 81/72 + 72/30 = 141/40
In mixed form: 321/40
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