Add 18/21 and 10/18, Solve 18/21 + 10/18 as a fraction

Add 18/21 and 10/18

18/21 + 10/18 is 89/63.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
18/21 = 18 × 6/21 × 6 = 108/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
10/18 = 10 × 7/18 × 7 = 70/126
Add the two like fractions:
108/126 + 70/126 = 108 + 70/126 = 178/126
178/126 simplified gives 89/63
So, 18/21 + 10/18 = 89/63
In mixed form: 126/63

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