Subtract 2/70 from 40/45
40/45 - 2/70 is 271/315.
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,
2/70 = 2 × 9/70 × 9 = 18/630 - Subtract the two like fractions:
560/630 - 18/630 = 560 - 18/630 = 542/630 - After reducing the fraction, the answer is 271/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/45-2/70 40/45-4/70 40/90-2/70 40/45-6/70 40/45-10/70 40/45-14/70