Add 28/45 and 21/40
28/45 + 21/40 is 413/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
28/45 = 28 × 8/45 × 8 = 224/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
21/40 = 21 × 9/40 × 9 = 189/360 - Add the two like fractions:
224/360 + 189/360 = 224 + 189/360 = 413/360 - So, 28/45 + 21/40 = 413/360
In mixed form: 153/360
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