Add 80/84 and 75/70
1st number: 80/84, 2nd number: 1 5/70
80/84 + 75/70 is 85/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
80/84 = 80 × 5/84 × 5 = 400/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
75/70 = 75 × 6/70 × 6 = 450/420 - Add the two like fractions:
400/420 + 450/420 = 400 + 450/420 = 850/420 - 850/420 simplified gives 85/42
- So, 80/84 + 75/70 = 85/42
In mixed form: 21/42
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