Add 42/48 and 42/70
42/48 + 42/70 is 59/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 70 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 48 × 35 = 1680,
42/48 = 42 × 35/48 × 35 = 1470/1680 - Likewise, for the 2nd fraction, since 70 × 24 = 1680,
42/70 = 42 × 24/70 × 24 = 1008/1680 - Add the two like fractions:
1470/1680 + 1008/1680 = 1470 + 1008/1680 = 2478/1680 - 2478/1680 simplified gives 59/40
- So, 42/48 + 42/70 = 59/40
In mixed form: 119/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/48+42/70 42/48+84/70 42/96+42/70