Add 7/40 and 21/18
1st number: 7/40, 2nd number: 1 3/18
7/40 + 21/18 is 161/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
7/40 = 7 × 9/40 × 9 = 63/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
21/18 = 21 × 20/18 × 20 = 420/360 - Add the two like fractions:
63/360 + 420/360 = 63 + 420/360 = 483/360 - 483/360 simplified gives 161/120
- So, 7/40 + 21/18 = 161/120
In mixed form: 141/120
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