Add 20/72 and 42/6, Solve 20/72 + 7 0/6 as a fraction

Add 20/72 and 42/6

1^st number: 20/72, 2^nd number: 7 0/6

20/72 + 42/6 is 131/18.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 6 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 72 × 1 = 72,
20/72 = 20 × 1/72 × 1 = 20/72
Likewise, for the 2nd fraction, since 6 × 12 = 72,
42/6 = 42 × 12/6 × 12 = 504/72
Add the two like fractions:
20/72 + 504/72 = 20 + 504/72 = 524/72
524/72 simplified gives 131/18
So, 20/72 + 42/6 = 131/18
In mixed form: 75/18

MathStep (Works offline)

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