Add 72/42 and 15/30
1st number: 1 30/42, 2nd number: 15/30
72/42 + 15/30 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
72/42 = 72 × 5/42 × 5 = 360/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
15/30 = 15 × 7/30 × 7 = 105/210 - Add the two like fractions:
360/210 + 105/210 = 360 + 105/210 = 465/210 - 465/210 simplified gives 31/14
- So, 72/42 + 15/30 = 31/14
In mixed form: 23/14
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