Add 40/25 and 21/42
1st number: 1 15/25, 2nd number: 21/42
40/25 + 21/42 is 21/10.
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,
40/25 = 40 × 42/25 × 42 = 1680/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
21/42 = 21 × 25/42 × 25 = 525/1050 - Add the two like fractions:
1680/1050 + 525/1050 = 1680 + 525/1050 = 2205/1050 - 2205/1050 simplified gives 21/10
- So, 40/25 + 21/42 = 21/10
In mixed form: 21/10
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