Add 98/18 and 72/21
1st number: 5 8/18, 2nd number: 3 9/21
98/18 + 72/21 is 559/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
98/18 = 98 × 7/18 × 7 = 686/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
72/21 = 72 × 6/21 × 6 = 432/126 - Add the two like fractions:
686/126 + 432/126 = 686 + 432/126 = 1118/126 - 1118/126 simplified gives 559/63
- So, 98/18 + 72/21 = 559/63
In mixed form: 855/63
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