Add 28/21 and 49/90
1st number: 1 7/21, 2nd number: 49/90
28/21 + 49/90 is 169/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
28/21 = 28 × 30/21 × 30 = 840/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
49/90 = 49 × 7/90 × 7 = 343/630 - Add the two like fractions:
840/630 + 343/630 = 840 + 343/630 = 1183/630 - 1183/630 simplified gives 169/90
- So, 28/21 + 49/90 = 169/90
In mixed form: 179/90
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