Add 54/9 and 75/21
1st number: 6 0/9, 2nd number: 3 12/21
54/9 + 75/21 is 67/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
54/9 = 54 × 7/9 × 7 = 378/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
75/21 = 75 × 3/21 × 3 = 225/63 - Add the two like fractions:
378/63 + 225/63 = 378 + 225/63 = 603/63 - 603/63 simplified gives 67/7
- So, 54/9 + 75/21 = 67/7
In mixed form: 94/7
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