Subtract 70/18 from 48/70
1st number: 48/70, 2nd number: 3 16/18
48/70 - 70/18 is -1009/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
48/70 = 48 × 9/70 × 9 = 432/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
70/18 = 70 × 35/18 × 35 = 2450/630 - Subtract the two like fractions:
432/630 - 2450/630 = 432 - 2450/630 = -2018/630 - After reducing the fraction, the answer is -1009/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/70-70/18 48/70-70/36 48/70-70/54 48/70-70/90