Add 72/30 and 63/42
1st number: 2 12/30, 2nd number: 1 21/42
72/30 + 63/42 is 39/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
72/30 = 72 × 7/30 × 7 = 504/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
63/42 = 63 × 5/42 × 5 = 315/210 - Add the two like fractions:
504/210 + 315/210 = 504 + 315/210 = 819/210 - 819/210 simplified gives 39/10
- So, 72/30 + 63/42 = 39/10
In mixed form: 39/10
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