Add 20/7 and 30/90
1st number: 2 6/7, 2nd number: 30/90
20/7 + 30/90 is 67/21.
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,
20/7 = 20 × 90/7 × 90 = 1800/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
30/90 = 30 × 7/90 × 7 = 210/630 - Add the two like fractions:
1800/630 + 210/630 = 1800 + 210/630 = 2010/630 - 2010/630 simplified gives 67/21
- So, 20/7 + 30/90 = 67/21
In mixed form: 34/21
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