Add 12/7 and 42/54, Solve 1 5/7 + 42/54 as a fraction

Add 12/7 and 42/54

1^st number: 1 5/7, 2^nd number: 42/54

12/7 + 42/54 is 157/63.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 7 × 54 = 378,
12/7 = 12 × 54/7 × 54 = 648/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
42/54 = 42 × 7/54 × 7 = 294/378
Add the two like fractions:
648/378 + 294/378 = 648 + 294/378 = 942/378
942/378 simplified gives 157/63
So, 12/7 + 42/54 = 157/63
In mixed form: 231/63

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