Add 18/21 and 70/75
18/21 + 70/75 is 188/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 75 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
18/21 = 18 × 25/21 × 25 = 450/525 - Likewise, for the 2nd fraction, since 75 × 7 = 525,
70/75 = 70 × 7/75 × 7 = 490/525 - Add the two like fractions:
450/525 + 490/525 = 450 + 490/525 = 940/525 - 940/525 simplified gives 188/105
- So, 18/21 + 70/75 = 188/105
In mixed form: 183/105
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