Add 20/75 and 21/18
1st number: 20/75, 2nd number: 1 3/18
20/75 + 21/18 is 43/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
20/75 = 20 × 6/75 × 6 = 120/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
21/18 = 21 × 25/18 × 25 = 525/450 - Add the two like fractions:
120/450 + 525/450 = 120 + 525/450 = 645/450 - 645/450 simplified gives 43/30
- So, 20/75 + 21/18 = 43/30
In mixed form: 113/30
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