Add 50/42 and 4/30, Solve 1 8/42 + 4/30 as a fraction

Add 50/42 and 4/30

1^st number: 1 8/42, 2^nd number: 4/30

50/42 + 4/30 is 139/105.

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,
50/42 = 50 × 5/42 × 5 = 250/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
4/30 = 4 × 7/30 × 7 = 28/210
Add the two like fractions:
250/210 + 28/210 = 250 + 28/210 = 278/210
278/210 simplified gives 139/105
So, 50/42 + 4/30 = 139/105
In mixed form: 134/105

MathStep (Works offline)

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