Add 18/40 and 45/15
1st number: 18/40, 2nd number: 3 0/15
18/40 + 45/15 is 69/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
18/40 = 18 × 3/40 × 3 = 54/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
45/15 = 45 × 8/15 × 8 = 360/120 - Add the two like fractions:
54/120 + 360/120 = 54 + 360/120 = 414/120 - 414/120 simplified gives 69/20
- So, 18/40 + 45/15 = 69/20
In mixed form: 39/20
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