Add 9/84 and 70/80
9/84 + 70/80 is 55/56.
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,
9/84 = 9 × 20/84 × 20 = 180/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
70/80 = 70 × 21/80 × 21 = 1470/1680 - Add the two like fractions:
180/1680 + 1470/1680 = 180 + 1470/1680 = 1650/1680 - 1650/1680 simplified gives 55/56
- So, 9/84 + 70/80 = 55/56
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