Subtract 42/16 from 9/30
1st number: 9/30, 2nd number: 2 10/16
9/30 - 42/16 is -93/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 16 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
9/30 = 9 × 8/30 × 8 = 72/240 - Likewise, for the 2nd fraction, since 16 × 15 = 240,
42/16 = 42 × 15/16 × 15 = 630/240 - Subtract the two like fractions:
72/240 - 630/240 = 72 - 630/240 = -558/240 - After reducing the fraction, the answer is -93/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/30-42/16 9/30-84/16 9/60-42/16 9/30-42/32 27/30-42/16 9/90-42/16 9/30-42/48 45/30-42/16 9/30-42/80 63/30-42/16