Add 9/12 and 42/40
1st number: 9/12, 2nd number: 1 2/40
9/12 + 42/40 is 9/5.
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,
9/12 = 9 × 10/12 × 10 = 90/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
42/40 = 42 × 3/40 × 3 = 126/120 - Add the two like fractions:
90/120 + 126/120 = 90 + 126/120 = 216/120 - 216/120 simplified gives 9/5
- So, 9/12 + 42/40 = 9/5
In mixed form: 14/5
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