Add 90/18 and 21/10
1st number: 5 0/18, 2nd number: 2 1/10
90/18 + 21/10 is 71/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
90/18 = 90 × 5/18 × 5 = 450/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
21/10 = 21 × 9/10 × 9 = 189/90 - Add the two like fractions:
450/90 + 189/90 = 450 + 189/90 = 639/90 - 639/90 simplified gives 71/10
- So, 90/18 + 21/10 = 71/10
In mixed form: 71/10
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