Add 84/18 and 45/40
1st number: 4 12/18, 2nd number: 1 5/40
84/18 + 45/40 is 139/24.
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,
84/18 = 84 × 20/18 × 20 = 1680/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
45/40 = 45 × 9/40 × 9 = 405/360 - Add the two like fractions:
1680/360 + 405/360 = 1680 + 405/360 = 2085/360 - 2085/360 simplified gives 139/24
- So, 84/18 + 45/40 = 139/24
In mixed form: 519/24
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