Add 72/80 and 14/42
72/80 + 14/42 is 37/30.
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,
72/80 = 72 × 21/80 × 21 = 1512/1680 - Likewise, for the 2nd fraction, since 42 × 40 = 1680,
14/42 = 14 × 40/42 × 40 = 560/1680 - Add the two like fractions:
1512/1680 + 560/1680 = 1512 + 560/1680 = 2072/1680 - 2072/1680 simplified gives 37/30
- So, 72/80 + 14/42 = 37/30
In mixed form: 17/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/80+28/42 72/80+14/84 72/80+70/42 72/80+98/42