Add 21/42 and 8/10
21/42 + 8/10 is 13/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
21/42 = 21 × 5/42 × 5 = 105/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
8/10 = 8 × 21/10 × 21 = 168/210 - Add the two like fractions:
105/210 + 168/210 = 105 + 168/210 = 273/210 - 273/210 simplified gives 13/10
- So, 21/42 + 8/10 = 13/10
In mixed form: 13/10
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