Add 18/90 and 98/21, Solve 18/90 + 4 14/21 as a fraction

Add 18/90 and 98/21

1^st number: 18/90, 2^nd number: 4 14/21

18/90 + 98/21 is 73/15.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
18/90 = 18 × 7/90 × 7 = 126/630
Likewise, for the 2nd fraction, since 21 × 30 = 630,
98/21 = 98 × 30/21 × 30 = 2940/630
Add the two like fractions:
126/630 + 2940/630 = 126 + 2940/630 = 3066/630
3066/630 simplified gives 73/15
So, 18/90 + 98/21 = 73/15
In mixed form: 413/15

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