Add 21/25 and 18/42
21/25 + 18/42 is 222/175.
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,
21/25 = 21 × 42/25 × 42 = 882/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
18/42 = 18 × 25/42 × 25 = 450/1050 - Add the two like fractions:
882/1050 + 450/1050 = 882 + 450/1050 = 1332/1050 - 1332/1050 simplified gives 222/175
- So, 21/25 + 18/42 = 222/175
In mixed form: 147/175
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