Add 21/5 and 20/42
1st number: 4 1/5, 2nd number: 20/42
21/5 + 20/42 is 491/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
21/5 = 21 × 42/5 × 42 = 882/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Add the two like fractions:
882/210 + 100/210 = 882 + 100/210 = 982/210 - 982/210 simplified gives 491/105
- So, 21/5 + 20/42 = 491/105
In mixed form: 471/105
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