Add 4/12 and 90/21
1st number: 4/12, 2nd number: 4 6/21
4/12 + 90/21 is 97/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
4/12 = 4 × 7/12 × 7 = 28/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
90/21 = 90 × 4/21 × 4 = 360/84 - Add the two like fractions:
28/84 + 360/84 = 28 + 360/84 = 388/84 - 388/84 simplified gives 97/21
- So, 4/12 + 90/21 = 97/21
In mixed form: 413/21
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