Add 30/72 and 45/28
1st number: 30/72, 2nd number: 1 17/28
30/72 + 45/28 is 85/42.
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,
30/72 = 30 × 7/72 × 7 = 210/504 - Likewise, for the 2nd fraction, since 28 × 18 = 504,
45/28 = 45 × 18/28 × 18 = 810/504 - Add the two like fractions:
210/504 + 810/504 = 210 + 810/504 = 1020/504 - 1020/504 simplified gives 85/42
- So, 30/72 + 45/28 = 85/42
In mixed form: 21/42
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