Add 28/72 and 45/40
1st number: 28/72, 2nd number: 1 5/40
28/72 + 45/40 is 109/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
28/72 = 28 × 5/72 × 5 = 140/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
45/40 = 45 × 9/40 × 9 = 405/360 - Add the two like fractions:
140/360 + 405/360 = 140 + 405/360 = 545/360 - 545/360 simplified gives 109/72
- So, 28/72 + 45/40 = 109/72
In mixed form: 137/72
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