Add 12/42 and 21/5, Solve 12/42 + 4 1/5 as a fraction

Add 12/42 and 21/5

1^st number: 12/42, 2^nd number: 4 1/5

12/42 + 21/5 is 157/35.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
12/42 = 12 × 5/42 × 5 = 60/210
Likewise, for the 2nd fraction, since 5 × 42 = 210,
21/5 = 21 × 42/5 × 42 = 882/210
Add the two like fractions:
60/210 + 882/210 = 60 + 882/210 = 942/210
942/210 simplified gives 157/35
So, 12/42 + 21/5 = 157/35
In mixed form: 417/35

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