Add 70/75 and 80/21
1st number: 70/75, 2nd number: 3 17/21
70/75 + 80/21 is 166/35.
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,
80/21 = 80 × 25/21 × 25 = 2000/525 - Add the two like fractions:
490/525 + 2000/525 = 490 + 2000/525 = 2490/525 - 2490/525 simplified gives 166/35
- So, 70/75 + 80/21 = 166/35
In mixed form: 426/35
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