Add 42/72 and 9/5
1st number: 42/72, 2nd number: 1 4/5
42/72 + 9/5 is 143/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 5 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 5 × 72 = 360,
9/5 = 9 × 72/5 × 72 = 648/360 - Add the two like fractions:
210/360 + 648/360 = 210 + 648/360 = 858/360 - 858/360 simplified gives 143/60
- So, 42/72 + 9/5 = 143/60
In mixed form: 223/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/72+9/5 42/72+18/5 42/72+9/10 42/72+27/5 42/72+9/15 42/72+45/5 42/72+9/25 42/72+63/5 42/72+9/35