Add 90/27 and 45/12
1st number: 3 9/27, 2nd number: 3 9/12
90/27 + 45/12 is 85/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 27 × 4 = 108,
90/27 = 90 × 4/27 × 4 = 360/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
45/12 = 45 × 9/12 × 9 = 405/108 - Add the two like fractions:
360/108 + 405/108 = 360 + 405/108 = 765/108 - 765/108 simplified gives 85/12
- So, 90/27 + 45/12 = 85/12
In mixed form: 71/12
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