Add 45/12 and 60/40
1st number: 3 9/12, 2nd number: 1 20/40
45/12 + 60/40 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
45/12 = 45 × 10/12 × 10 = 450/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
60/40 = 60 × 3/40 × 3 = 180/120 - Add the two like fractions:
450/120 + 180/120 = 450 + 180/120 = 630/120 - 630/120 simplified gives 21/4
- So, 45/12 + 60/40 = 21/4
In mixed form: 51/4
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