Add 15/18 and 8/7, Solve 15/18 + 1 1/7 as a fraction

Add 15/18 and 8/7

1^st number: 15/18, 2^nd number: 1 1/7

15/18 + 8/7 is 83/42.

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,
15/18 = 15 × 7/18 × 7 = 105/126
Likewise, for the 2nd fraction, since 7 × 18 = 126,
8/7 = 8 × 18/7 × 18 = 144/126
Add the two like fractions:
105/126 + 144/126 = 105 + 144/126 = 249/126
249/126 simplified gives 83/42
So, 15/18 + 8/7 = 83/42
In mixed form: 141/42

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