Add 72/28 and 42/63
1st number: 2 16/28, 2nd number: 42/63
72/28 + 42/63 is 68/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
72/28 = 72 × 9/28 × 9 = 648/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
42/63 = 42 × 4/63 × 4 = 168/252 - Add the two like fractions:
648/252 + 168/252 = 648 + 168/252 = 816/252 - 816/252 simplified gives 68/21
- So, 72/28 + 42/63 = 68/21
In mixed form: 35/21
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