Add 14/70 and 80/90
14/70 + 80/90 is 49/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
14/70 = 14 × 9/70 × 9 = 126/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
80/90 = 80 × 7/90 × 7 = 560/630 - Add the two like fractions:
126/630 + 560/630 = 126 + 560/630 = 686/630 - 686/630 simplified gives 49/45
- So, 14/70 + 80/90 = 49/45
In mixed form: 14/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/70+80/90 42/70+80/90 98/70+80/90