Add 90/12 and 15/28
1st number: 7 6/12, 2nd number: 15/28
90/12 + 15/28 is 225/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
90/12 = 90 × 7/12 × 7 = 630/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
15/28 = 15 × 3/28 × 3 = 45/84 - Add the two like fractions:
630/84 + 45/84 = 630 + 45/84 = 675/84 - 675/84 simplified gives 225/28
- So, 90/12 + 15/28 = 225/28
In mixed form: 81/28
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