Add 48/80 and 28/42
48/80 + 28/42 is 19/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
48/80 = 48 × 21/80 × 21 = 1008/1680 - Likewise, for the 2nd fraction, since 42 × 40 = 1680,
28/42 = 28 × 40/42 × 40 = 1120/1680 - Add the two like fractions:
1008/1680 + 1120/1680 = 1008 + 1120/1680 = 2128/1680 - 2128/1680 simplified gives 19/15
- So, 48/80 + 28/42 = 19/15
In mixed form: 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/80+28/42 48/80+56/42 48/80+28/84 48/80+84/42