Add 90/80 and 10/84
1st number: 1 10/80, 2nd number: 10/84
90/80 + 10/84 is 209/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 84 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
90/80 = 90 × 21/80 × 21 = 1890/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
10/84 = 10 × 20/84 × 20 = 200/1680 - Add the two like fractions:
1890/1680 + 200/1680 = 1890 + 200/1680 = 2090/1680 - 2090/1680 simplified gives 209/168
- So, 90/80 + 10/84 = 209/168
In mixed form: 141/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+20/84 90/80+30/84 90/80+50/84 90/80+70/84