Add 20/40 and 8/70
20/40 + 8/70 is 43/70.
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,
8/70 = 8 × 4/70 × 4 = 32/280 - Add the two like fractions:
140/280 + 32/280 = 140 + 32/280 = 172/280 - 172/280 simplified gives 43/70
- So, 20/40 + 8/70 = 43/70
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