Add 21/5 and 90/45
1st number: 4 1/5, 2nd number: 2 0/45
21/5 + 90/45 is 31/5.
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,
90/45 = 90 × 1/45 × 1 = 90/45 - Add the two like fractions:
189/45 + 90/45 = 189 + 90/45 = 279/45 - 279/45 simplified gives 31/5
- So, 21/5 + 90/45 = 31/5
In mixed form: 61/5
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