Add 21/14 and 84/90
1st number: 1 7/14, 2nd number: 84/90
21/14 + 84/90 is 73/30.
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,
21/14 = 21 × 45/14 × 45 = 945/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
84/90 = 84 × 7/90 × 7 = 588/630 - Add the two like fractions:
945/630 + 588/630 = 945 + 588/630 = 1533/630 - 1533/630 simplified gives 73/30
- So, 21/14 + 84/90 = 73/30
In mixed form: 213/30
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