Subtract 1/45 from 42/70
42/70 - 1/45 is 26/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
42/70 = 42 × 9/70 × 9 = 378/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
1/45 = 1 × 14/45 × 14 = 14/630 - Subtract the two like fractions:
378/630 - 14/630 = 378 - 14/630 = 364/630 - After reducing the fraction, the answer is 26/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70-1/45 42/70-2/45 42/70-1/90 42/70-3/45 42/70-5/45 42/70-7/45