Add 45/75 and 7/90
45/75 + 7/90 is 61/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 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 90 × 5 = 450,
7/90 = 7 × 5/90 × 5 = 35/450 - Add the two like fractions:
270/450 + 35/450 = 270 + 35/450 = 305/450 - 305/450 simplified gives 61/90
- So, 45/75 + 7/90 = 61/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/75+7/90 45/75+14/90 45/75+21/90 45/75+35/90 45/75+49/90