Add 9/21 and 90/75, Solve 9/21 + 1 15/75 as a fraction

Add 9/21 and 90/75

1^st number: 9/21, 2^nd number: 1 15/75

9/21 + 90/75 is 57/35.

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,
9/21 = 9 × 25/21 × 25 = 225/525
Likewise, for the 2nd fraction, since 75 × 7 = 525,
90/75 = 90 × 7/75 × 7 = 630/525
Add the two like fractions:
225/525 + 630/525 = 225 + 630/525 = 855/525
855/525 simplified gives 57/35
So, 9/21 + 90/75 = 57/35
In mixed form: 122/35

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