Add 18/4 and 21/90
1st number: 4 2/4, 2nd number: 21/90
18/4 + 21/90 is 71/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
18/4 = 18 × 45/4 × 45 = 810/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
21/90 = 21 × 2/90 × 2 = 42/180 - Add the two like fractions:
810/180 + 42/180 = 810 + 42/180 = 852/180 - 852/180 simplified gives 71/15
- So, 18/4 + 21/90 = 71/15
In mixed form: 411/15
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