Add 15/4 and 90/84
1st number: 3 3/4, 2nd number: 1 6/84
15/4 + 90/84 is 135/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
15/4 = 15 × 21/4 × 21 = 315/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
90/84 = 90 × 1/84 × 1 = 90/84 - Add the two like fractions:
315/84 + 90/84 = 315 + 90/84 = 405/84 - 405/84 simplified gives 135/28
- So, 15/4 + 90/84 = 135/28
In mixed form: 423/28
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