Add 35/21 and 21/90, Solve 1 14/21 + 21/90 as a fraction

Add 35/21 and 21/90

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

35/21 + 21/90 is 19/10.

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

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 21 × 30 = 630,
35/21 = 35 × 30/21 × 30 = 1050/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
21/90 = 21 × 7/90 × 7 = 147/630
Add the two like fractions:
1050/630 + 147/630 = 1050 + 147/630 = 1197/630
1197/630 simplified gives 19/10
So, 35/21 + 21/90 = 19/10
In mixed form: 19/10

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