Add 21/42 and 90/25
1st number: 21/42, 2nd number: 3 15/25
21/42 + 90/25 is 41/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 25 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
21/42 = 21 × 25/42 × 25 = 525/1050 - Likewise, for the 2nd fraction, since 25 × 42 = 1050,
90/25 = 90 × 42/25 × 42 = 3780/1050 - Add the two like fractions:
525/1050 + 3780/1050 = 525 + 3780/1050 = 4305/1050 - 4305/1050 simplified gives 41/10
- So, 21/42 + 90/25 = 41/10
In mixed form: 41/10
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