Add 12/70 and 45/84
12/70 + 45/84 is 99/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
12/70 = 12 × 6/70 × 6 = 72/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
45/84 = 45 × 5/84 × 5 = 225/420 - Add the two like fractions:
72/420 + 225/420 = 72 + 225/420 = 297/420 - 297/420 simplified gives 99/140
- So, 12/70 + 45/84 = 99/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/70+45/84 12/70+90/84 36/70+45/84 60/70+45/84 84/70+45/84