Add 12/56 and 40/45
12/56 + 40/45 is 139/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 45 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
12/56 = 12 × 45/56 × 45 = 540/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
40/45 = 40 × 56/45 × 56 = 2240/2520 - Add the two like fractions:
540/2520 + 2240/2520 = 540 + 2240/2520 = 2780/2520 - 2780/2520 simplified gives 139/126
- So, 12/56 + 40/45 = 139/126
In mixed form: 113/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/56+40/45 12/56+80/45 12/56+40/90 36/56+40/45 60/56+40/45 84/56+40/45