Add 4/21 and 21/12
1st number: 4/21, 2nd number: 1 9/12
421 + 2112 is 16384.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
421 = 4 × 421 × 4 = 1684 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
2112 = 21 × 712 × 7 = 14784 - Add the two like fractions:
1684 + 14784 = 16 + 14784 = 16384 - So, 4/21 + 21/12 = 163/84
In mixed form: 17984
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