Add 40/72 and 54/70
40/72 + 54/70 is 418/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 70 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
40/72 = 40 × 35/72 × 35 = 1400/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
54/70 = 54 × 36/70 × 36 = 1944/2520 - Add the two like fractions:
1400/2520 + 1944/2520 = 1400 + 1944/2520 = 3344/2520 - 3344/2520 simplified gives 418/315
- So, 40/72 + 54/70 = 418/315
In mixed form: 1103/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/72+54/70