Add 21/45 and 90/84
1st number: 21/45, 2nd number: 1 6/84
21/45 + 90/84 is 323/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
21/45 = 21 × 28/45 × 28 = 588/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
90/84 = 90 × 15/84 × 15 = 1350/1260 - Add the two like fractions:
588/1260 + 1350/1260 = 588 + 1350/1260 = 1938/1260 - 1938/1260 simplified gives 323/210
- So, 21/45 + 90/84 = 323/210
In mixed form: 1113/210
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