Add 18/21 and 72/30, Solve 18/21 + 2 12/30 as a fraction

Add 18/21 and 72/30

1^st number: 18/21, 2^nd number: 2 12/30

18/21 + 72/30 is 114/35.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 21 × 10 = 210,
18/21 = 18 × 10/21 × 10 = 180/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
72/30 = 72 × 7/30 × 7 = 504/210
Add the two like fractions:
180/210 + 504/210 = 180 + 504/210 = 684/210
684/210 simplified gives 114/35
So, 18/21 + 72/30 = 114/35
In mixed form: 39/35

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