Add 21/3 and 18/90
1st number: 7 0/3, 2nd number: 18/90
21/3 + 18/90 is 36/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 3 × 30 = 90,
21/3 = 21 × 30/3 × 30 = 630/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
18/90 = 18 × 1/90 × 1 = 18/90 - Add the two like fractions:
630/90 + 18/90 = 630 + 18/90 = 648/90 - 648/90 simplified gives 36/5
- So, 21/3 + 18/90 = 36/5
In mixed form: 71/5
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