Add 54/45 and 2/21
1st number: 1 9/45, 2nd number: 2/21
54/45 + 2/21 is 136/105.
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,
54/45 = 54 × 7/45 × 7 = 378/315 - Likewise, for the 2nd fraction, since 21 × 15 = 315,
2/21 = 2 × 15/21 × 15 = 30/315 - Add the two like fractions:
378/315 + 30/315 = 378 + 30/315 = 408/315 - 408/315 simplified gives 136/105
- So, 54/45 + 2/21 = 136/105
In mixed form: 131/105
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