Add 56/21 and 84/90, Solve 2 14/21 + 84/90 as a fraction

Add 56/21 and 84/90

1^st number: 2 14/21, 2^nd number: 84/90

56/21 + 84/90 is 18/5.

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,
56/21 = 56 × 30/21 × 30 = 1680/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
84/90 = 84 × 7/90 × 7 = 588/630
Add the two like fractions:
1680/630 + 588/630 = 1680 + 588/630 = 2268/630
2268/630 simplified gives 18/5
So, 56/21 + 84/90 = 18/5
In mixed form: 33/5

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