Add 75/7 and 20/90
1st number: 10 5/7, 2nd number: 20/90
75/7 + 20/90 is 689/63.
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,
75/7 = 75 × 90/7 × 90 = 6750/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
20/90 = 20 × 7/90 × 7 = 140/630 - Add the two like fractions:
6750/630 + 140/630 = 6750 + 140/630 = 6890/630 - 6890/630 simplified gives 689/63
- So, 75/7 + 20/90 = 689/63
In mixed form: 1059/63
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