Add 40/56 and 75/45
1st number: 40/56, 2nd number: 1 30/45
40/56 + 75/45 is 50/21.
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,
40/56 = 40 × 45/56 × 45 = 1800/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
75/45 = 75 × 56/45 × 56 = 4200/2520 - Add the two like fractions:
1800/2520 + 4200/2520 = 1800 + 4200/2520 = 6000/2520 - 6000/2520 simplified gives 50/21
- So, 40/56 + 75/45 = 50/21
In mixed form: 28/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/56+75/45 40/56+75/90