Add 21/84 and 70/75
21/84 + 70/75 is 71/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 75 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
21/84 = 21 × 25/84 × 25 = 525/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
70/75 = 70 × 28/75 × 28 = 1960/2100 - Add the two like fractions:
525/2100 + 1960/2100 = 525 + 1960/2100 = 2485/2100 - 2485/2100 simplified gives 71/60
- So, 21/84 + 70/75 = 71/60
In mixed form: 111/60
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