Add 3/15 and 42/40
1st number: 3/15, 2nd number: 1 2/40
3/15 + 42/40 is 5/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
3/15 = 3 × 8/15 × 8 = 24/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
42/40 = 42 × 3/40 × 3 = 126/120 - Add the two like fractions:
24/120 + 126/120 = 24 + 126/120 = 150/120 - 150/120 simplified gives 5/4
- So, 3/15 + 42/40 = 5/4
In mixed form: 11/4
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