Add 40/8 and 12/42
1st number: 5 0/8, 2nd number: 12/42
40/8 + 12/42 is 37/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
40/8 = 40 × 21/8 × 21 = 840/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
12/42 = 12 × 4/42 × 4 = 48/168 - Add the two like fractions:
840/168 + 48/168 = 840 + 48/168 = 888/168 - 888/168 simplified gives 37/7
- So, 40/8 + 12/42 = 37/7
In mixed form: 52/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/8+12/42 40/8+24/42 40/16+12/42 40/8+12/84 40/8+36/42 40/24+12/42 40/8+60/42 40/8+84/42 40/56+12/42