Add 25/30 and 80/90
25/30 + 80/90 is 31/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
25/30 = 25 × 3/30 × 3 = 75/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
80/90 = 80 × 1/90 × 1 = 80/90 - Add the two like fractions:
75/90 + 80/90 = 75 + 80/90 = 155/90 - 155/90 simplified gives 31/18
- So, 25/30 + 80/90 = 31/18
In mixed form: 113/18
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