Add 70/75 and 9/21
70/75 + 9/21 is 143/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
70/75 = 70 × 7/75 × 7 = 490/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
9/21 = 9 × 25/21 × 25 = 225/525 - Add the two like fractions:
490/525 + 225/525 = 490 + 225/525 = 715/525 - 715/525 simplified gives 143/105
- So, 70/75 + 9/21 = 143/105
In mixed form: 138/105
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