Add 9/42 and 56/80
9/42 + 56/80 is 32/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
9/42 = 9 × 40/42 × 40 = 360/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
56/80 = 56 × 21/80 × 21 = 1176/1680 - Add the two like fractions:
360/1680 + 1176/1680 = 360 + 1176/1680 = 1536/1680 - 1536/1680 simplified gives 32/35
- So, 9/42 + 56/80 = 32/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42+56/80 9/84+56/80 27/42+56/80 45/42+56/80 63/42+56/80