Add 90/81 and 75/20
1st number: 1 9/81, 2nd number: 3 15/20
90/81 + 75/20 is 175/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
90/81 = 90 × 20/81 × 20 = 1800/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
75/20 = 75 × 81/20 × 81 = 6075/1620 - Add the two like fractions:
1800/1620 + 6075/1620 = 1800 + 6075/1620 = 7875/1620 - 7875/1620 simplified gives 175/36
- So, 90/81 + 75/20 = 175/36
In mixed form: 431/36
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