Add 28/72 and 18/15
1st number: 28/72, 2nd number: 1 3/15
28/72 + 18/15 is 143/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 15 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 15 × 24 = 360,
18/15 = 18 × 24/15 × 24 = 432/360 - Add the two like fractions:
140/360 + 432/360 = 140 + 432/360 = 572/360 - 572/360 simplified gives 143/90
- So, 28/72 + 18/15 = 143/90
In mixed form: 153/90
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