Add 42/40 and 9/15
1st number: 1 2/40, 2nd number: 9/15
42/40 + 9/15 is 33/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
42/40 = 42 × 3/40 × 3 = 126/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
9/15 = 9 × 8/15 × 8 = 72/120 - Add the two like fractions:
126/120 + 72/120 = 126 + 72/120 = 198/120 - 198/120 simplified gives 33/20
- So, 42/40 + 9/15 = 33/20
In mixed form: 113/20
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