Add 15/21 and 28/32
15/21 + 28/32 is 89/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 21 × 32 = 672,
15/21 = 15 × 32/21 × 32 = 480/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
28/32 = 28 × 21/32 × 21 = 588/672 - Add the two like fractions:
480/672 + 588/672 = 480 + 588/672 = 1068/672 - 1068/672 simplified gives 89/56
- So, 15/21 + 28/32 = 89/56
In mixed form: 133/56
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