Add 18/42 and 63/21
1st number: 18/42, 2nd number: 3 0/21
18/42 + 63/21 is 24/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
18/42 = 18 × 1/42 × 1 = 18/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
63/21 = 63 × 2/21 × 2 = 126/42 - Add the two like fractions:
18/42 + 126/42 = 18 + 126/42 = 144/42 - 144/42 simplified gives 24/7
- So, 18/42 + 63/21 = 24/7
In mixed form: 33/7
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