Add 45/90 and 40/7
1st number: 45/90, 2nd number: 5 5/7
45/90 + 40/7 is 87/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
45/90 = 45 × 7/90 × 7 = 315/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
40/7 = 40 × 90/7 × 90 = 3600/630 - Add the two like fractions:
315/630 + 3600/630 = 315 + 3600/630 = 3915/630 - 3915/630 simplified gives 87/14
- So, 45/90 + 40/7 = 87/14
In mixed form: 63/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 45/90+80/7 45/90+40/14 45/90+40/21 45/90+40/35 45/90+40/49