Add 8/80 and 15/42
8/80 + 15/42 is 16/35.
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,
8/80 = 8 × 21/80 × 21 = 168/1680 - Likewise, for the 2nd fraction, since 42 × 40 = 1680,
15/42 = 15 × 40/42 × 40 = 600/1680 - Add the two like fractions:
168/1680 + 600/1680 = 168 + 600/1680 = 768/1680 - 768/1680 simplified gives 16/35
- So, 8/80 + 15/42 = 16/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/80+15/42 8/80+30/42 8/80+15/84 24/80+15/42 8/80+45/42 40/80+15/42 8/80+75/42 56/80+15/42