Add 27/45 and 30/21
1st number: 27/45, 2nd number: 1 9/21
27/45 + 30/21 is 71/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 21 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
27/45 = 27 × 7/45 × 7 = 189/315 - Likewise, for the 2nd fraction, since 21 × 15 = 315,
30/21 = 30 × 15/21 × 15 = 450/315 - Add the two like fractions:
189/315 + 450/315 = 189 + 450/315 = 639/315 - 639/315 simplified gives 71/35
- So, 27/45 + 30/21 = 71/35
In mixed form: 21/35
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