Add 36/80 and 45/84
36/80 + 45/84 is 69/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 84 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
36/80 = 36 × 21/80 × 21 = 756/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
45/84 = 45 × 20/84 × 20 = 900/1680 - Add the two like fractions:
756/1680 + 900/1680 = 756 + 900/1680 = 1656/1680 - 1656/1680 simplified gives 69/70
- So, 36/80 + 45/84 = 69/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/80+45/84 36/80+90/84