Add 48/18 and 4/42, Solve 2 12/18 + 4/42 as a fraction

Add 48/18 and 4/42

1^st number: 2 12/18, 2^nd number: 4/42

48/18 + 4/42 is 58/21.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
48/18 = 48 × 7/18 × 7 = 336/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
4/42 = 4 × 3/42 × 3 = 12/126
Add the two like fractions:
336/126 + 12/126 = 336 + 12/126 = 348/126
348/126 simplified gives 58/21
So, 48/18 + 4/42 = 58/21
In mixed form: 216/21

MathStep (Works offline)

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