Add 20/40 and 36/70
20/40 + 36/70 is 71/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
20/40 = 20 × 7/40 × 7 = 140/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
36/70 = 36 × 4/70 × 4 = 144/280 - Add the two like fractions:
140/280 + 144/280 = 140 + 144/280 = 284/280 - 284/280 simplified gives 71/70
- So, 20/40 + 36/70 = 71/70
In mixed form: 11/70
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