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

Add 90/75 and 9/21

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

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

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

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