Add 90/25 and 20/42
1st number: 3 15/25, 2nd number: 20/42
90/25 + 20/42 is 428/105.
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,
90/25 = 90 × 42/25 × 42 = 3780/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
20/42 = 20 × 25/42 × 25 = 500/1050 - Add the two like fractions:
3780/1050 + 500/1050 = 3780 + 500/1050 = 4280/1050 - 4280/1050 simplified gives 428/105
- So, 90/25 + 20/42 = 428/105
In mixed form: 48/105
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