Add 21/7 and 28/90
1st number: 3 0/7, 2nd number: 28/90
21/7 + 28/90 is 149/45.
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,
21/7 = 21 × 90/7 × 90 = 1890/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
28/90 = 28 × 7/90 × 7 = 196/630 - Add the two like fractions:
1890/630 + 196/630 = 1890 + 196/630 = 2086/630 - 2086/630 simplified gives 149/45
- So, 21/7 + 28/90 = 149/45
In mixed form: 314/45
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