Add 9/90 and 72/50, Solve 9/90 + 1 22/50 as a fraction

Add 9/90 and 72/50

1^st number: 9/90, 2^nd number: 1 22/50

9/90 + 72/50 is 77/50.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 50 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 90 × 5 = 450,
9/90 = 9 × 5/90 × 5 = 45/450
Likewise, for the 2nd fraction, since 50 × 9 = 450,
72/50 = 72 × 9/50 × 9 = 648/450
Add the two like fractions:
45/450 + 648/450 = 45 + 648/450 = 693/450
693/450 simplified gives 77/50
So, 9/90 + 72/50 = 77/50
In mixed form: 127/50

MathStep (Works offline)

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