Add 90/18 and 21/63, Solve 5 0/18 + 21/63 as a fraction

Add 90/18 and 21/63

1^st number: 5 0/18, 2^nd number: 21/63

90/18 + 21/63 is 16/3.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
90/18 = 90 × 7/18 × 7 = 630/126
Likewise, for the 2nd fraction, since 63 × 2 = 126,
21/63 = 21 × 2/63 × 2 = 42/126
Add the two like fractions:
630/126 + 42/126 = 630 + 42/126 = 672/126
672/126 simplified gives 16/3
So, 90/18 + 21/63 = 16/3
In mixed form: 51/3

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