Add 27/90 and 21/7
1st number: 27/90, 2nd number: 3 0/7
27/90 + 21/7 is 33/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
27/90 = 27 × 7/90 × 7 = 189/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
21/7 = 21 × 90/7 × 90 = 1890/630 - Add the two like fractions:
189/630 + 1890/630 = 189 + 1890/630 = 2079/630 - 2079/630 simplified gives 33/10
- So, 27/90 + 21/7 = 33/10
In mixed form: 33/10
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