Add 9/20 and 75/90
9/20 + 75/90 is 77/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
75/90 = 75 × 2/90 × 2 = 150/180 - Add the two like fractions:
81/180 + 150/180 = 81 + 150/180 = 231/180 - 231/180 simplified gives 77/60
- So, 9/20 + 75/90 = 77/60
In mixed form: 117/60
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