Add 21/14 and 27/90, Solve 1 7/14 + 27/90 as a fraction

Add 21/14 and 27/90

1^st number: 1 7/14, 2^nd number: 27/90

21/14 + 27/90 is 9/5.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 14 × 45 = 630,
21/14 = 21 × 45/14 × 45 = 945/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
27/90 = 27 × 7/90 × 7 = 189/630
Add the two like fractions:
945/630 + 189/630 = 945 + 189/630 = 1134/630
1134/630 simplified gives 9/5
So, 21/14 + 27/90 = 9/5
In mixed form: 14/5

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