Add 81/30 and 9/42, Solve 2 21/30 + 9/42 as a fraction

Add 81/30 and 9/42

1^st number: 2 21/30, 2^nd number: 9/42

81/30 + 9/42 is 102/35.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 30 × 7 = 210,
81/30 = 81 × 7/30 × 7 = 567/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
9/42 = 9 × 5/42 × 5 = 45/210
Add the two like fractions:
567/210 + 45/210 = 567 + 45/210 = 612/210
612/210 simplified gives 102/35
So, 81/30 + 9/42 = 102/35
In mixed form: 232/35

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