Add 72/14 and 21/90
1st number: 5 2/14, 2nd number: 21/90
72/14 + 21/90 is 1129/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 14 × 45 = 630,
72/14 = 72 × 45/14 × 45 = 3240/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
21/90 = 21 × 7/90 × 7 = 147/630 - Add the two like fractions:
3240/630 + 147/630 = 3240 + 147/630 = 3387/630 - 3387/630 simplified gives 1129/210
- So, 72/14 + 21/90 = 1129/210
In mixed form: 579/210
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