Add 96/21 and 4/18, Solve 4 12/21 + 4/18 as a fraction

Add 96/21 and 4/18

1^st number: 4 12/21, 2^nd number: 4/18

96/21 + 4/18 is 302/63.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
96/21 = 96 × 6/21 × 6 = 576/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
4/18 = 4 × 7/18 × 7 = 28/126
Add the two like fractions:
576/126 + 28/126 = 576 + 28/126 = 604/126
604/126 simplified gives 302/63
So, 96/21 + 4/18 = 302/63
In mixed form: 450/63

MathStep (Works offline)

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