Add 80/14 and 21/18, Solve 5 10/14 + 1 3/18 as a fraction

Add 80/14 and 21/18

1^st number: 5 10/14, 2^nd number: 1 3/18

80/14 + 21/18 is 289/42.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 14 × 9 = 126,
80/14 = 80 × 9/14 × 9 = 720/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
21/18 = 21 × 7/18 × 7 = 147/126
Add the two like fractions:
720/126 + 147/126 = 720 + 147/126 = 867/126
867/126 simplified gives 289/42
So, 80/14 + 21/18 = 289/42
In mixed form: 637/42

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