Add 40/12 and 15/90
1st number: 3 4/12, 2nd number: 15/90
40/12 + 15/90 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
40/12 = 40 × 15/12 × 15 = 600/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
15/90 = 15 × 2/90 × 2 = 30/180 - Add the two like fractions:
600/180 + 30/180 = 600 + 30/180 = 630/180 - 630/180 simplified gives 7/2
- So, 40/12 + 15/90 = 7/2
In mixed form: 31/2
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