Add 7/40 and 54/84
7/40 + 54/84 is 229/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
7/40 = 7 × 21/40 × 21 = 147/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
54/84 = 54 × 10/84 × 10 = 540/840 - Add the two like fractions:
147/840 + 540/840 = 147 + 540/840 = 687/840 - 687/840 simplified gives 229/280
- So, 7/40 + 54/84 = 229/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/40+54/84 7/80+54/84 21/40+54/84 35/40+54/84 49/40+54/84