Add 75/4 and 18/21, Solve 18 3/4 + 18/21 as a fraction

Add 75/4 and 18/21

1^st number: 18 3/4, 2^nd number: 18/21

75/4 + 18/21 is 549/28.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 4 × 21 = 84,
75/4 = 75 × 21/4 × 21 = 1575/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
18/21 = 18 × 4/21 × 4 = 72/84
Add the two like fractions:
1575/84 + 72/84 = 1575 + 72/84 = 1647/84
1647/84 simplified gives 549/28
So, 75/4 + 18/21 = 549/28
In mixed form: 1917/28

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