Add 80/18 and 45/40
1st number: 4 8/18, 2nd number: 1 5/40
80/18 + 45/40 is 401/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
80/18 = 80 × 20/18 × 20 = 1600/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
45/40 = 45 × 9/40 × 9 = 405/360 - Add the two like fractions:
1600/360 + 405/360 = 1600 + 405/360 = 2005/360 - 2005/360 simplified gives 401/72
- So, 80/18 + 45/40 = 401/72
In mixed form: 541/72
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