Add 8/21 and 42/18
1st number: 8/21, 2nd number: 2 6/18
8/21 + 42/18 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
8/21 = 8 × 6/21 × 6 = 48/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
42/18 = 42 × 7/18 × 7 = 294/126 - Add the two like fractions:
48/126 + 294/126 = 48 + 294/126 = 342/126 - 342/126 simplified gives 19/7
- So, 8/21 + 42/18 = 19/7
In mixed form: 25/7
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