Add 10/8 and 21/42
1st number: 1 2/8, 2nd number: 21/42
10/8 + 21/42 is 7/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
10/8 = 10 × 21/8 × 21 = 210/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
21/42 = 21 × 4/42 × 4 = 84/168 - Add the two like fractions:
210/168 + 84/168 = 210 + 84/168 = 294/168 - 294/168 simplified gives 7/4
- So, 10/8 + 21/42 = 7/4
In mixed form: 13/4
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