Add 40/80 and 20/84
40/80 + 20/84 is 31/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 84 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
40/80 = 40 × 21/80 × 21 = 840/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
20/84 = 20 × 20/84 × 20 = 400/1680 - Add the two like fractions:
840/1680 + 400/1680 = 840 + 400/1680 = 1240/1680 - 1240/1680 simplified gives 31/42
- So, 40/80 + 20/84 = 31/42
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