Add 81/7 and 42/90
1st number: 11 4/7, 2nd number: 42/90
81/7 + 42/90 is 1264/105.
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,
81/7 = 81 × 90/7 × 90 = 7290/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
42/90 = 42 × 7/90 × 7 = 294/630 - Add the two like fractions:
7290/630 + 294/630 = 7290 + 294/630 = 7584/630 - 7584/630 simplified gives 1264/105
- So, 81/7 + 42/90 = 1264/105
In mixed form: 124/105
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