Add 27/10 and 90/63, Solve 2 7/10 + 1 27/63 as a fraction

Add 27/10 and 90/63

1^st number: 2 7/10, 2^nd number: 1 27/63

27/10 + 90/63 is 289/70.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 10 × 63 = 630,
27/10 = 27 × 63/10 × 63 = 1701/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
90/63 = 90 × 10/63 × 10 = 900/630
Add the two like fractions:
1701/630 + 900/630 = 1701 + 900/630 = 2601/630
2601/630 simplified gives 289/70
So, 27/10 + 90/63 = 289/70
In mixed form: 49/70

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