Add 70/80 and 63/84
70/80 + 63/84 is 13/8.
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,
70/80 = 70 × 21/80 × 21 = 1470/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
63/84 = 63 × 20/84 × 20 = 1260/1680 - Add the two like fractions:
1470/1680 + 1260/1680 = 1470 + 1260/1680 = 2730/1680 - 2730/1680 simplified gives 13/8
- So, 70/80 + 63/84 = 13/8
In mixed form: 15/8
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