Add 42/21 and 54/5
1st number: 2 0/21, 2nd number: 10 4/5
42/21 + 54/5 is 64/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
42/21 = 42 × 5/21 × 5 = 210/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
54/5 = 54 × 21/5 × 21 = 1134/105 - Add the two like fractions:
210/105 + 1134/105 = 210 + 1134/105 = 1344/105 - 1344/105 simplified gives 64/5
- So, 42/21 + 54/5 = 64/5
In mixed form: 124/5
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