Add 54/84 and 70/80
54/84 + 70/80 is 85/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 84 × 20 = 1680,
54/84 = 54 × 20/84 × 20 = 1080/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
70/80 = 70 × 21/80 × 21 = 1470/1680 - Add the two like fractions:
1080/1680 + 1470/1680 = 1080 + 1470/1680 = 2550/1680 - 2550/1680 simplified gives 85/56
- So, 54/84 + 70/80 = 85/56
In mixed form: 129/56
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