Add 40/10 and 7/84
1st number: 4 0/10, 2nd number: 7/84
40/10 + 7/84 is 49/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 10 × 42 = 420,
40/10 = 40 × 42/10 × 42 = 1680/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
7/84 = 7 × 5/84 × 5 = 35/420 - Add the two like fractions:
1680/420 + 35/420 = 1680 + 35/420 = 1715/420 - 1715/420 simplified gives 49/12
- So, 40/10 + 7/84 = 49/12
In mixed form: 41/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/10+7/84 40/10+14/84 40/20+7/84 40/10+21/84 40/30+7/84 40/10+35/84 40/50+7/84 40/10+49/84 40/70+7/84