Add 12/30 and 5/40
12/30 + 5/40 is 21/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
12/30 = 12 × 4/30 × 4 = 48/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
5/40 = 5 × 3/40 × 3 = 15/120 - Add the two like fractions:
48/120 + 15/120 = 48 + 15/120 = 63/120 - 63/120 simplified gives 21/40
- So, 12/30 + 5/40 = 21/40
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