Subtract 5/70 from 40/45
40/45 - 5/70 is 103/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
40/45 = 40 × 14/45 × 14 = 560/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
5/70 = 5 × 9/70 × 9 = 45/630 - Subtract the two like fractions:
560/630 - 45/630 = 560 - 45/630 = 515/630 - After reducing the fraction, the answer is 103/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/45-5/70 40/45-10/70 40/90-5/70 40/45-15/70 40/45-25/70 40/45-35/70