Add 81/7 and 9/30, Solve 11 4/7 + 9/30 as a fraction

Add 81/7 and 9/30

1^st number: 11 4/7, 2^nd number: 9/30

81/7 + 9/30 is 831/70.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 7 × 30 = 210,
81/7 = 81 × 30/7 × 30 = 2430/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
9/30 = 9 × 7/30 × 7 = 63/210
Add the two like fractions:
2430/210 + 63/210 = 2430 + 63/210 = 2493/210
2493/210 simplified gives 831/70
So, 81/7 + 9/30 = 831/70
In mixed form: 1161/70

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