Add 45/72 and 18/28
45/72 + 18/28 is 71/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 28 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
45/72 = 45 × 7/72 × 7 = 315/504 - Likewise, for the 2nd fraction, since 28 × 18 = 504,
18/28 = 18 × 18/28 × 18 = 324/504 - Add the two like fractions:
315/504 + 324/504 = 315 + 324/504 = 639/504 - 639/504 simplified gives 71/56
- So, 45/72 + 18/28 = 71/56
In mixed form: 115/56
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