Add 20/28 and 90/45
1st number: 20/28, 2nd number: 2 0/45
20/28 + 90/45 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
20/28 = 20 × 45/28 × 45 = 900/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
90/45 = 90 × 28/45 × 28 = 2520/1260 - Add the two like fractions:
900/1260 + 2520/1260 = 900 + 2520/1260 = 3420/1260 - 3420/1260 simplified gives 19/7
- So, 20/28 + 90/45 = 19/7
In mixed form: 25/7
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