Add 90/75 and 21/7
1st number: 1 15/75, 2nd number: 3 0/7
90/75 + 21/7 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 7 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 7 × 75 = 525,
21/7 = 21 × 75/7 × 75 = 1575/525 - Add the two like fractions:
630/525 + 1575/525 = 630 + 1575/525 = 2205/525 - 2205/525 simplified gives 21/5
- So, 90/75 + 21/7 = 21/5
In mixed form: 41/5
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