Add 90/40 and 30/80
1st number: 2 10/40, 2nd number: 30/80
90/40 + 30/80 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
90/40 = 90 × 2/40 × 2 = 180/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
30/80 = 30 × 1/80 × 1 = 30/80 - Add the two like fractions:
180/80 + 30/80 = 180 + 30/80 = 210/80 - 210/80 simplified gives 21/8
- So, 90/40 + 30/80 = 21/8
In mixed form: 25/8
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