Add 18/12 and 10/21
1st number: 1 6/12, 2nd number: 10/21
18/12 + 10/21 is 83/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
18/12 = 18 × 7/12 × 7 = 126/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
10/21 = 10 × 4/21 × 4 = 40/84 - Add the two like fractions:
126/84 + 40/84 = 126 + 40/84 = 166/84 - 166/84 simplified gives 83/42
- So, 18/12 + 10/21 = 83/42
In mixed form: 141/42
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