Add 30/40 and 90/64
1st number: 30/40, 2nd number: 1 26/64
30/40 + 90/64 is 69/32.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 64 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 40 × 8 = 320,
30/40 = 30 × 8/40 × 8 = 240/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
90/64 = 90 × 5/64 × 5 = 450/320 - Add the two like fractions:
240/320 + 450/320 = 240 + 450/320 = 690/320 - 690/320 simplified gives 69/32
- So, 30/40 + 90/64 = 69/32
In mixed form: 25/32
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/40+90/64 30/80+90/64 90/40+90/64