Add 40/80 and 80/84
40/80 + 80/84 is 61/42.
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,
80/84 = 80 × 20/84 × 20 = 1600/1680 - Add the two like fractions:
840/1680 + 1600/1680 = 840 + 1600/1680 = 2440/1680 - 2440/1680 simplified gives 61/42
- So, 40/80 + 80/84 = 61/42
In mixed form: 119/42
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