Add 30/42 and 15/8, Solve 30/42 + 1 7/8 as a fraction

Add 30/42 and 15/8

1^st number: 30/42, 2^nd number: 1 7/8

30/42 + 15/8 is 145/56.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 8 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 42 × 4 = 168,
30/42 = 30 × 4/42 × 4 = 120/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
15/8 = 15 × 21/8 × 21 = 315/168
Add the two like fractions:
120/168 + 315/168 = 120 + 315/168 = 435/168
435/168 simplified gives 145/56
So, 30/42 + 15/8 = 145/56
In mixed form: 233/56

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