Add 12/15 and 9/28
12/15 + 9/28 is 157/140.
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,
9/28 = 9 × 15/28 × 15 = 135/420 - Add the two like fractions:
336/420 + 135/420 = 336 + 135/420 = 471/420 - 471/420 simplified gives 157/140
- So, 12/15 + 9/28 = 157/140
In mixed form: 117/140
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