Add 20/90 and 8/7
1st number: 20/90, 2nd number: 1 1/7
20/90 + 8/7 is 86/63.
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,
20/90 = 20 × 7/90 × 7 = 140/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
8/7 = 8 × 90/7 × 90 = 720/630 - Add the two like fractions:
140/630 + 720/630 = 140 + 720/630 = 860/630 - 860/630 simplified gives 86/63
- So, 20/90 + 8/7 = 86/63
In mixed form: 123/63
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