Add 9/42 and 98/72, Solve 9/42 + 1 26/72 as a fraction

Add 9/42 and 98/72

1^st number: 9/42, 2^nd number: 1 26/72

9/42 + 98/72 is 397/252.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 42 × 12 = 504,
9/42 = 9 × 12/42 × 12 = 108/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
98/72 = 98 × 7/72 × 7 = 686/504
Add the two like fractions:
108/504 + 686/504 = 108 + 686/504 = 794/504
794/504 simplified gives 397/252
So, 9/42 + 98/72 = 397/252
In mixed form: 1145/252

MathStep (Works offline)

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