Add 18/30 and 7/40
18/30 + 7/40 is 31/40.
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,
18/30 = 18 × 4/30 × 4 = 72/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
7/40 = 7 × 3/40 × 3 = 21/120 - Add the two like fractions:
72/120 + 21/120 = 72 + 21/120 = 93/120 - 93/120 simplified gives 31/40
- So, 18/30 + 7/40 = 31/40
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