Add 12/15 and 90/28
1st number: 12/15, 2nd number: 3 6/28
12/15 + 90/28 is 281/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
12/15 = 12 × 28/15 × 28 = 336/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
90/28 = 90 × 15/28 × 15 = 1350/420 - Add the two like fractions:
336/420 + 1350/420 = 336 + 1350/420 = 1686/420 - 1686/420 simplified gives 281/70
- So, 12/15 + 90/28 = 281/70
In mixed form: 41/70
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