Add 90/45 and 70/7
1st number: 2 0/45, 2nd number: 10 0/7
90/45 + 70/7 is 12/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
90/45 = 90 × 7/45 × 7 = 630/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
70/7 = 70 × 45/7 × 45 = 3150/315 - Add the two like fractions:
630/315 + 3150/315 = 630 + 3150/315 = 3780/315 - 3780/315 simplified gives 12/1
- So, 90/45 + 70/7 = 12/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/45+70/14 90/45+70/21 90/45+70/35 90/45+70/49