Add 45/84 and 90/21
1st number: 45/84, 2nd number: 4 6/21
45/84 + 90/21 is 135/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
45/84 = 45 × 1/84 × 1 = 45/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
90/21 = 90 × 4/21 × 4 = 360/84 - Add the two like fractions:
45/84 + 360/84 = 45 + 360/84 = 405/84 - 405/84 simplified gives 135/28
- So, 45/84 + 90/21 = 135/28
In mixed form: 423/28
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