Add 42/40 and 90/8
1st number: 1 2/40, 2nd number: 11 2/8
42/40 + 90/8 is 123/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
42/40 = 42 × 1/40 × 1 = 42/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
90/8 = 90 × 5/8 × 5 = 450/40 - Add the two like fractions:
42/40 + 450/40 = 42 + 450/40 = 492/40 - 492/40 simplified gives 123/10
- So, 42/40 + 90/8 = 123/10
In mixed form: 123/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+90/8 42/80+90/8 42/40+90/16 42/40+90/24 42/40+90/40 42/40+90/56