Add 20/40 and 63/70
20/40 + 63/70 is 7/5.
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,
63/70 = 63 × 4/70 × 4 = 252/280 - Add the two like fractions:
140/280 + 252/280 = 140 + 252/280 = 392/280 - 392/280 simplified gives 7/5
- So, 20/40 + 63/70 = 7/5
In mixed form: 12/5
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