Add 98/30 and 21/42, Solve 3 8/30 + 21/42 as a fraction

Add 98/30 and 21/42

1^st number: 3 8/30, 2^nd number: 21/42

98/30 + 21/42 is 113/30.

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,
98/30 = 98 × 7/30 × 7 = 686/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
21/42 = 21 × 5/42 × 5 = 105/210
Add the two like fractions:
686/210 + 105/210 = 686 + 105/210 = 791/210
791/210 simplified gives 113/30
So, 98/30 + 21/42 = 113/30
In mixed form: 323/30

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