Add 21/42 and 28/7
1st number: 21/42, 2nd number: 4 0/7
21/42 + 28/7 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
21/42 = 21 × 1/42 × 1 = 21/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
28/7 = 28 × 6/7 × 6 = 168/42 - Add the two like fractions:
21/42 + 168/42 = 21 + 168/42 = 189/42 - 189/42 simplified gives 9/2
- So, 21/42 + 28/7 = 9/2
In mixed form: 41/2
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