Add 42/48 and 45/84
42/48 + 45/84 is 79/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 84 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 48 × 7 = 336,
42/48 = 42 × 7/48 × 7 = 294/336 - Likewise, for the 2nd fraction, since 84 × 4 = 336,
45/84 = 45 × 4/84 × 4 = 180/336 - Add the two like fractions:
294/336 + 180/336 = 294 + 180/336 = 474/336 - 474/336 simplified gives 79/56
- So, 42/48 + 45/84 = 79/56
In mixed form: 123/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/48+45/84 42/48+90/84 42/96+45/84