Add 28/84 and 50/70
28/84 + 50/70 is 22/21.
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,
28/84 = 28 × 5/84 × 5 = 140/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
50/70 = 50 × 6/70 × 6 = 300/420 - Add the two like fractions:
140/420 + 300/420 = 140 + 300/420 = 440/420 - 440/420 simplified gives 22/21
- So, 28/84 + 50/70 = 22/21
In mixed form: 11/21
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