Add 81/72 and 12/45
1st number: 1 9/72, 2nd number: 12/45
81/72 + 12/45 is 167/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 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 45 × 8 = 360,
12/45 = 12 × 8/45 × 8 = 96/360 - Add the two like fractions:
405/360 + 96/360 = 405 + 96/360 = 501/360 - 501/360 simplified gives 167/120
- So, 81/72 + 12/45 = 167/120
In mixed form: 147/120
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