Add 15/25 and 21/42
15/25 + 21/42 is 11/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 25 × 42 = 1050,
15/25 = 15 × 42/25 × 42 = 630/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
21/42 = 21 × 25/42 × 25 = 525/1050 - Add the two like fractions:
630/1050 + 525/1050 = 630 + 525/1050 = 1155/1050 - 1155/1050 simplified gives 11/10
- So, 15/25 + 21/42 = 11/10
In mixed form: 11/10
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