Add 3/18 and 21/40
3/18 + 21/40 is 83/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
3/18 = 3 × 20/18 × 20 = 60/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
21/40 = 21 × 9/40 × 9 = 189/360 - Add the two like fractions:
60/360 + 189/360 = 60 + 189/360 = 249/360 - 249/360 simplified gives 83/120
- So, 3/18 + 21/40 = 83/120
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