Add 80/40 and 45/90
1st number: 2 0/40, 2nd number: 45/90
80/40 + 45/90 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
80/40 = 80 × 9/40 × 9 = 720/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
45/90 = 45 × 4/90 × 4 = 180/360 - Add the two like fractions:
720/360 + 180/360 = 720 + 180/360 = 900/360 - 900/360 simplified gives 5/2
- So, 80/40 + 45/90 = 5/2
In mixed form: 21/2
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