Add 75/80 and 18/84
75/80 + 18/84 is 129/112.
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,
75/80 = 75 × 21/80 × 21 = 1575/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
18/84 = 18 × 20/84 × 20 = 360/1680 - Add the two like fractions:
1575/1680 + 360/1680 = 1575 + 360/1680 = 1935/1680 - 1935/1680 simplified gives 129/112
- So, 75/80 + 18/84 = 129/112
In mixed form: 117/112
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