Add 25/21 and 12/90
1st number: 1 4/21, 2nd number: 12/90
25/21 + 12/90 is 139/105.
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,
25/21 = 25 × 30/21 × 30 = 750/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
12/90 = 12 × 7/90 × 7 = 84/630 - Add the two like fractions:
750/630 + 84/630 = 750 + 84/630 = 834/630 - 834/630 simplified gives 139/105
- So, 25/21 + 12/90 = 139/105
In mixed form: 134/105
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