Add 18/56 and 12/90
18/56 + 12/90 is 191/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
18/56 = 18 × 45/56 × 45 = 810/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
12/90 = 12 × 28/90 × 28 = 336/2520 - Add the two like fractions:
810/2520 + 336/2520 = 810 + 336/2520 = 1146/2520 - 1146/2520 simplified gives 191/420
- So, 18/56 + 12/90 = 191/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/56+12/90 18/56+24/90 54/56+12/90 18/56+36/90 90/56+12/90 18/56+60/90 18/56+84/90