Add 81/7 and 7/90, Solve 11 4/7 + 7/90 as a fraction

Add 81/7 and 7/90

1^st number: 11 4/7, 2^nd number: 7/90

81/7 + 7/90 is 7339/630.

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,
7/90 = 7 × 7/90 × 7 = 49/630
Add the two like fractions:
7290/630 + 49/630 = 7290 + 49/630 = 7339/630
So, 81/7 + 7/90 = 7339/630
In mixed form: 11409/630

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