Add 12/90 and 81/7
1st number: 12/90, 2nd number: 11 4/7
12/90 + 81/7 is 1229/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
12/90 = 12 × 7/90 × 7 = 84/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
81/7 = 81 × 90/7 × 90 = 7290/630 - Add the two like fractions:
84/630 + 7290/630 = 84 + 7290/630 = 7374/630 - 7374/630 simplified gives 1229/105
- So, 12/90 + 81/7 = 1229/105
In mixed form: 1174/105
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