Add 15/40 and 42/63
15/40 + 42/63 is 25/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
15/40 = 15 × 63/40 × 63 = 945/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
42/63 = 42 × 40/63 × 40 = 1680/2520 - Add the two like fractions:
945/2520 + 1680/2520 = 945 + 1680/2520 = 2625/2520 - 2625/2520 simplified gives 25/24
- So, 15/40 + 42/63 = 25/24
In mixed form: 11/24
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