Add 54/21 and 75/8
1st number: 2 12/21, 2nd number: 9 3/8
54/21 + 75/8 is 669/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
54/21 = 54 × 8/21 × 8 = 432/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
75/8 = 75 × 21/8 × 21 = 1575/168 - Add the two like fractions:
432/168 + 1575/168 = 432 + 1575/168 = 2007/168 - 2007/168 simplified gives 669/56
- So, 54/21 + 75/8 = 669/56
In mixed form: 1153/56
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