Add 42/21 and 18/9
1st number: 2 0/21, 2nd number: 2 0/9
42/21 + 18/9 is 4/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
42/21 = 42 × 3/21 × 3 = 126/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
18/9 = 18 × 7/9 × 7 = 126/63 - Add the two like fractions:
126/63 + 126/63 = 126 + 126/63 = 252/63 - 252/63 simplified gives 4/1
- So, 42/21 + 18/9 = 4/1
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