Subtract 84/35 from 9/4, Solve 2 1/4

Subtract 84/35 from 9/4

1^st number: 2 1/4, 2^nd number: 2 14/35

9/4 - 84/35 is -3/20.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 35 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 4 × 35 = 140,
9/4 = 9 × 35/4 × 35 = 315/140
Likewise, for the 2nd fraction, since 35 × 4 = 140,
84/35 = 84 × 4/35 × 4 = 336/140
Subtract the two like fractions:
315/140 - 336/140 = 315 - 336/140 = -21/140
After reducing the fraction, the answer is -3/20

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad