Add 70/45 and 8/90
1st number: 1 25/45, 2nd number: 8/90
70/45 + 8/90 is 74/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
70/45 = 70 × 2/45 × 2 = 140/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
8/90 = 8 × 1/90 × 1 = 8/90 - Add the two like fractions:
140/90 + 8/90 = 140 + 8/90 = 148/90 - 148/90 simplified gives 74/45
- So, 70/45 + 8/90 = 74/45
In mixed form: 129/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45+16/90 70/90+8/90 70/45+24/90 70/45+40/90 70/45+56/90