Add 4/84 and 90/45
1st number: 4/84, 2nd number: 2 0/45
4/84 + 90/45 is 43/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
4/84 = 4 × 15/84 × 15 = 60/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
90/45 = 90 × 28/45 × 28 = 2520/1260 - Add the two like fractions:
60/1260 + 2520/1260 = 60 + 2520/1260 = 2580/1260 - 2580/1260 simplified gives 43/21
- So, 4/84 + 90/45 = 43/21
In mixed form: 21/21
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