Add 45/2 and 70/72, Solve 22 1/2 + 70/72 as a fraction

Add 45/2 and 70/72

1^st number: 22 1/2, 2^nd number: 70/72

45/2 + 70/72 is 845/36.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 2 × 36 = 72,
45/2 = 45 × 36/2 × 36 = 1620/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
70/72 = 70 × 1/72 × 1 = 70/72
Add the two like fractions:
1620/72 + 70/72 = 1620 + 70/72 = 1690/72
1690/72 simplified gives 845/36
So, 45/2 + 70/72 = 845/36
In mixed form: 2317/36

MathStep (Works offline)

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