Add 20/45 and 18/4
1st number: 20/45, 2nd number: 4 2/4
20/45 + 18/4 is 89/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
20/45 = 20 × 4/45 × 4 = 80/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
18/4 = 18 × 45/4 × 45 = 810/180 - Add the two like fractions:
80/180 + 810/180 = 80 + 810/180 = 890/180 - 890/180 simplified gives 89/18
- So, 20/45 + 18/4 = 89/18
In mixed form: 417/18
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