Add 42/30 and 21/42, Solve 1 12/30 + 21/42 as a fraction

Add 42/30 and 21/42

1^st number: 1 12/30, 2^nd number: 21/42

42/30 + 21/42 is 19/10.

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,
42/30 = 42 × 7/30 × 7 = 294/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
21/42 = 21 × 5/42 × 5 = 105/210
Add the two like fractions:
294/210 + 105/210 = 294 + 105/210 = 399/210
399/210 simplified gives 19/10
So, 42/30 + 21/42 = 19/10
In mixed form: 19/10

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