Subtract 30/45 from 12/49
12/49 - 30/45 is -62/147.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 45 is 2205
Next, find the equivalent fraction of both fractional numbers with denominator 2205 - For the 1st fraction, since 49 × 45 = 2205,
12/49 = 12 × 45/49 × 45 = 540/2205 - Likewise, for the 2nd fraction, since 45 × 49 = 2205,
30/45 = 30 × 49/45 × 49 = 1470/2205 - Subtract the two like fractions:
540/2205 - 1470/2205 = 540 - 1470/2205 = -930/2205 - After reducing the fraction, the answer is -62/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/49-30/45 12/49-60/45 12/98-30/45 12/49-30/90 36/49-30/45 12/49-90/45 60/49-30/45 84/49-30/45