Add 54/30 and 6/42, Solve 1 24/30 + 6/42 as a fraction

Add 54/30 and 6/42

1^st number: 1 24/30, 2^nd number: 6/42

54/30 + 6/42 is 68/35.

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

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 30 × 7 = 210,
54/30 = 54 × 7/30 × 7 = 378/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
6/42 = 6 × 5/42 × 5 = 30/210
Add the two like fractions:
378/210 + 30/210 = 378 + 30/210 = 408/210
408/210 simplified gives 68/35
So, 54/30 + 6/42 = 68/35
In mixed form: 133/35

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad