Add 18/54 and 45/70
18/54 + 45/70 is 41/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 54 × 35 = 1890,
18/54 = 18 × 35/54 × 35 = 630/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
45/70 = 45 × 27/70 × 27 = 1215/1890 - Add the two like fractions:
630/1890 + 1215/1890 = 630 + 1215/1890 = 1845/1890 - 1845/1890 simplified gives 41/42
- So, 18/54 + 45/70 = 41/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/54+45/70 18/54+90/70 90/54+45/70