Add 9/12 and 12/40
9/12 + 12/40 is 21/20.
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,
12/40 = 12 × 3/40 × 3 = 36/120 - Add the two like fractions:
90/120 + 36/120 = 90 + 36/120 = 126/120 - 126/120 simplified gives 21/20
- So, 9/12 + 12/40 = 21/20
In mixed form: 11/20
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