Add 18/63 and 12/45
18/63 + 12/45 is 58/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
18/63 = 18 × 5/63 × 5 = 90/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
12/45 = 12 × 7/45 × 7 = 84/315 - Add the two like fractions:
90/315 + 84/315 = 90 + 84/315 = 174/315 - 174/315 simplified gives 58/105
- So, 18/63 + 12/45 = 58/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/63+12/45 18/63+24/45 18/63+12/90 54/63+12/45 18/63+36/45 90/63+12/45 18/63+60/45 18/63+84/45