Add 18/70 and 20/80
18/70 + 20/80 is 71/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
18/70 = 18 × 8/70 × 8 = 144/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
20/80 = 20 × 7/80 × 7 = 140/560 - Add the two like fractions:
144/560 + 140/560 = 144 + 140/560 = 284/560 - 284/560 simplified gives 71/140
- So, 18/70 + 20/80 = 71/140
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