Add 72/9 and 42/84
1st number: 8 0/9, 2nd number: 42/84
72/9 + 42/84 is 17/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
72/9 = 72 × 28/9 × 28 = 2016/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
42/84 = 42 × 3/84 × 3 = 126/252 - Add the two like fractions:
2016/252 + 126/252 = 2016 + 126/252 = 2142/252 - 2142/252 simplified gives 17/2
- So, 72/9 + 42/84 = 17/2
In mixed form: 81/2
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