Subtract 30/72 from 3/35
3/35 - 30/72 is -139/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 35 × 72 = 2520,
3/35 = 3 × 72/35 × 72 = 216/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
30/72 = 30 × 35/72 × 35 = 1050/2520 - Subtract the two like fractions:
216/2520 - 1050/2520 = 216 - 1050/2520 = -834/2520 - After reducing the fraction, the answer is -139/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/35-30/72 3/35-60/72 3/70-30/72 9/35-30/72 3/35-90/72 15/35-30/72 21/35-30/72