Add 42/54 and 8/45
42/54 + 8/45 is 43/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 45 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
42/54 = 42 × 5/54 × 5 = 210/270 - Likewise, for the 2nd fraction, since 45 × 6 = 270,
8/45 = 8 × 6/45 × 6 = 48/270 - Add the two like fractions:
210/270 + 48/270 = 210 + 48/270 = 258/270 - 258/270 simplified gives 43/45
- So, 42/54 + 8/45 = 43/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/54+8/45 42/54+16/45 42/54+8/90 42/54+24/45 42/54+40/45 42/54+56/45