Add 45/75 and 7/18
45/75 + 7/18 is 89/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
45/75 = 45 × 6/75 × 6 = 270/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
7/18 = 7 × 25/18 × 25 = 175/450 - Add the two like fractions:
270/450 + 175/450 = 270 + 175/450 = 445/450 - 445/450 simplified gives 89/90
- So, 45/75 + 7/18 = 89/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/75+7/18 45/75+14/18 45/75+7/36 45/75+21/18 45/75+7/54 45/75+35/18 45/75+7/90 45/75+49/18