Add 20/70 and 30/64
20/70 + 30/64 is 169/224.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 64 is 2240
Next, find the equivalent fraction of both fractional numbers with denominator 2240 - For the 1st fraction, since 70 × 32 = 2240,
20/70 = 20 × 32/70 × 32 = 640/2240 - Likewise, for the 2nd fraction, since 64 × 35 = 2240,
30/64 = 30 × 35/64 × 35 = 1050/2240 - Add the two like fractions:
640/2240 + 1050/2240 = 640 + 1050/2240 = 1690/2240 - 1690/2240 simplified gives 169/224
- So, 20/70 + 30/64 = 169/224
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70+30/64 20/70+60/64 60/70+30/64 20/70+90/64