Add 40/32 and 30/90
1st number: 1 8/32, 2nd number: 30/90
40/32 + 30/90 is 19/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 90 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 32 × 45 = 1440,
40/32 = 40 × 45/32 × 45 = 1800/1440 - Likewise, for the 2nd fraction, since 90 × 16 = 1440,
30/90 = 30 × 16/90 × 16 = 480/1440 - Add the two like fractions:
1800/1440 + 480/1440 = 1800 + 480/1440 = 2280/1440 - 2280/1440 simplified gives 19/12
- So, 40/32 + 30/90 = 19/12
In mixed form: 17/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/32+30/90 40/32+60/90 40/64+30/90 40/96+30/90