Add 42/72 and 63/45
1st number: 42/72, 2nd number: 1 18/45
42/72 + 63/45 is 119/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
42/72 = 42 × 5/72 × 5 = 210/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
63/45 = 63 × 8/45 × 8 = 504/360 - Add the two like fractions:
210/360 + 504/360 = 210 + 504/360 = 714/360 - 714/360 simplified gives 119/60
- So, 42/72 + 63/45 = 119/60
In mixed form: 159/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/72+63/45 42/72+63/90