Add 8/7 and 21/90
1st number: 1 1/7, 2nd number: 21/90
8/7 + 21/90 is 289/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
8/7 = 8 × 90/7 × 90 = 720/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
21/90 = 21 × 7/90 × 7 = 147/630 - Add the two like fractions:
720/630 + 147/630 = 720 + 147/630 = 867/630 - 867/630 simplified gives 289/210
- So, 8/7 + 21/90 = 289/210
In mixed form: 179/210
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