Add 12/40 and 4/84
12/40 + 4/84 is 73/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
12/40 = 12 × 21/40 × 21 = 252/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
4/84 = 4 × 10/84 × 10 = 40/840 - Add the two like fractions:
252/840 + 40/840 = 252 + 40/840 = 292/840 - 292/840 simplified gives 73/210
- So, 12/40 + 4/84 = 73/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40+4/84 12/40+8/84 12/80+4/84 36/40+4/84 12/40+12/84 60/40+4/84 12/40+20/84 84/40+4/84 12/40+28/84