Add 20/70 and 28/40
20/70 + 28/40 is 69/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
20/70 = 20 × 4/70 × 4 = 80/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
28/40 = 28 × 7/40 × 7 = 196/280 - Add the two like fractions:
80/280 + 196/280 = 80 + 196/280 = 276/280 - 276/280 simplified gives 69/70
- So, 20/70 + 28/40 = 69/70
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