Add 48/40 and 4/9, Solve 1 8/40 + 4/9 as a fraction

Add 48/40 and 4/9

1^st number: 1 8/40, 2^nd number: 4/9

48/40 + 4/9 is 74/45.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 40 × 9 = 360,
48/40 = 48 × 9/40 × 9 = 432/360
Likewise, for the 2nd fraction, since 9 × 40 = 360,
4/9 = 4 × 40/9 × 40 = 160/360
Add the two like fractions:
432/360 + 160/360 = 432 + 160/360 = 592/360
592/360 simplified gives 74/45
So, 48/40 + 4/9 = 74/45
In mixed form: 129/45

MathStep (Works offline)

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