Add 45/30 and 8/42
1st number: 1 15/30, 2nd number: 8/42
45/30 + 8/42 is 71/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
45/30 = 45 × 7/30 × 7 = 315/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
8/42 = 8 × 5/42 × 5 = 40/210 - Add the two like fractions:
315/210 + 40/210 = 315 + 40/210 = 355/210 - 355/210 simplified gives 71/42
- So, 45/30 + 8/42 = 71/42
In mixed form: 129/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+8/42 45/30+16/42 45/60+8/42 45/30+8/84 45/30+24/42 45/90+8/42 45/30+40/42 45/30+56/42