Add 90/80 and 12/84
1st number: 1 10/80, 2nd number: 12/84
90/80 + 12/84 is 71/56.
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,
90/80 = 90 × 21/80 × 21 = 1890/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
12/84 = 12 × 20/84 × 20 = 240/1680 - Add the two like fractions:
1890/1680 + 240/1680 = 1890 + 240/1680 = 2130/1680 - 2130/1680 simplified gives 71/56
- So, 90/80 + 12/84 = 71/56
In mixed form: 115/56
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