Add 84/21 and 21/45
1st number: 4 0/21, 2nd number: 21/45
84/21 + 21/45 is 67/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
84/21 = 84 × 15/21 × 15 = 1260/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
21/45 = 21 × 7/45 × 7 = 147/315 - Add the two like fractions:
1260/315 + 147/315 = 1260 + 147/315 = 1407/315 - 1407/315 simplified gives 67/15
- So, 84/21 + 21/45 = 67/15
In mixed form: 47/15
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