Add 90/20 and 45/80
1st number: 4 10/20, 2nd number: 45/80
90/20 + 45/80 is 81/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
90/20 = 90 × 4/20 × 4 = 360/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
45/80 = 45 × 1/80 × 1 = 45/80 - Add the two like fractions:
360/80 + 45/80 = 360 + 45/80 = 405/80 - 405/80 simplified gives 81/16
- So, 90/20 + 45/80 = 81/16
In mixed form: 51/16
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