Subtract 3/42 from 84/45
1st number: 1 39/45, 2nd number: 3/42
84/45 - 3/42 is 377/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
84/45 = 84 × 14/45 × 14 = 1176/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
3/42 = 3 × 15/42 × 15 = 45/630 - Subtract the two like fractions:
1176/630 - 45/630 = 1176 - 45/630 = 1131/630 - After reducing the fraction, the answer is 377/210
- In mixed form: 1167/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45-6/42 84/90-3/42 84/45-3/84 84/45-9/42 84/45-15/42 84/45-21/42