Add 42/21 and 9/30, Solve 2 0/21 + 9/30 as a fraction

Add 42/21 and 9/30

1^st number: 2 0/21, 2^nd number: 9/30

42/21 + 9/30 is 23/10.

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,
42/21 = 42 × 10/21 × 10 = 420/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
9/30 = 9 × 7/30 × 7 = 63/210
Add the two like fractions:
420/210 + 63/210 = 420 + 63/210 = 483/210
483/210 simplified gives 23/10
So, 42/21 + 9/30 = 23/10
In mixed form: 23/10

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