Add 90/12 and 15/40
1st number: 7 6/12, 2nd number: 15/40
90/12 + 15/40 is 63/8.
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,
90/12 = 90 × 10/12 × 10 = 900/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
15/40 = 15 × 3/40 × 3 = 45/120 - Add the two like fractions:
900/120 + 45/120 = 900 + 45/120 = 945/120 - 945/120 simplified gives 63/8
- So, 90/12 + 15/40 = 63/8
In mixed form: 77/8
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