Add 30/72 and 70/42
1st number: 30/72, 2nd number: 1 28/42
30/72 + 70/42 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 42 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 42 × 12 = 504,
70/42 = 70 × 12/42 × 12 = 840/504 - Add the two like fractions:
210/504 + 840/504 = 210 + 840/504 = 1050/504 - 1050/504 simplified gives 25/12
- So, 30/72 + 70/42 = 25/12
In mixed form: 21/12
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