Add 90/20 and 15/80
1st number: 4 10/20, 2nd number: 15/80
90/20 + 15/80 is 75/16.
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,
15/80 = 15 × 1/80 × 1 = 15/80 - Add the two like fractions:
360/80 + 15/80 = 360 + 15/80 = 375/80 - 375/80 simplified gives 75/16
- So, 90/20 + 15/80 = 75/16
In mixed form: 411/16
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