Add 15/40 and 18/30
15/40 + 18/30 is 39/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
15/40 = 15 × 3/40 × 3 = 45/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
18/30 = 18 × 4/30 × 4 = 72/120 - Add the two like fractions:
45/120 + 72/120 = 45 + 72/120 = 117/120 - 117/120 simplified gives 39/40
- So, 15/40 + 18/30 = 39/40
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