Add 21/5 and 18/45
1st number: 4 1/5, 2nd number: 18/45
21/5 + 18/45 is 23/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
21/5 = 21 × 9/5 × 9 = 189/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
18/45 = 18 × 1/45 × 1 = 18/45 - Add the two like fractions:
189/45 + 18/45 = 189 + 18/45 = 207/45 - 207/45 simplified gives 23/5
- So, 21/5 + 18/45 = 23/5
In mixed form: 43/5
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