Add 21/18 and 56/7, Solve 1 3/18 + 8 0/7 as a fraction

Add 21/18 and 56/7

1^st number: 1 3/18, 2^nd number: 8 0/7

21/18 + 56/7 is 55/6.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
21/18 = 21 × 7/18 × 7 = 147/126
Likewise, for the 2nd fraction, since 7 × 18 = 126,
56/7 = 56 × 18/7 × 18 = 1008/126
Add the two like fractions:
147/126 + 1008/126 = 147 + 1008/126 = 1155/126
1155/126 simplified gives 55/6
So, 21/18 + 56/7 = 55/6
In mixed form: 91/6

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