Add 15/42 and 5/30, Solve 15/42 + 5/30 as a fraction

Add 15/42 and 5/30

15/42 + 5/30 is 11/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
15/42 = 15 × 5/42 × 5 = 75/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
5/30 = 5 × 7/30 × 7 = 35/210
Add the two like fractions:
75/210 + 35/210 = 75 + 35/210 = 110/210
110/210 simplified gives 11/21
So, 15/42 + 5/30 = 11/21

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