Add 15/42 and 63/35, Solve 15/42 + 1 28/35 as a fraction

Add 15/42 and 63/35

1^st number: 15/42, 2^nd number: 1 28/35

15/42 + 63/35 is 151/70.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 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 35 × 6 = 210,
63/35 = 63 × 6/35 × 6 = 378/210
Add the two like fractions:
75/210 + 378/210 = 75 + 378/210 = 453/210
453/210 simplified gives 151/70
So, 15/42 + 63/35 = 151/70
In mixed form: 211/70

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