Add 8/80 and 45/42
1st number: 8/80, 2nd number: 1 3/42
8/80 + 45/42 is 41/35.
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,
45/42 = 45 × 40/42 × 40 = 1800/1680 - Add the two like fractions:
168/1680 + 1800/1680 = 168 + 1800/1680 = 1968/1680 - 1968/1680 simplified gives 41/35
- So, 8/80 + 45/42 = 41/35
In mixed form: 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+45/42 8/80+90/42 8/80+45/84 24/80+45/42 40/80+45/42 56/80+45/42