Add 84/80 and 40/63
1st number: 1 4/80, 2nd number: 40/63
84/80 + 40/63 is 2123/1260.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 63 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 80 × 63 = 5040,
84/80 = 84 × 63/80 × 63 = 5292/5040 - Likewise, for the 2nd fraction, since 63 × 80 = 5040,
40/63 = 40 × 80/63 × 80 = 3200/5040 - Add the two like fractions:
5292/5040 + 3200/5040 = 5292 + 3200/5040 = 8492/5040 - 8492/5040 simplified gives 2123/1260
- So, 84/80 + 40/63 = 2123/1260
In mixed form: 1863/1260
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80+80/63