Add 18/84 and 90/75
1st number: 18/84, 2nd number: 1 15/75
18/84 + 90/75 is 99/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 75 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
18/84 = 18 × 25/84 × 25 = 450/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
90/75 = 90 × 28/75 × 28 = 2520/2100 - Add the two like fractions:
450/2100 + 2520/2100 = 450 + 2520/2100 = 2970/2100 - 2970/2100 simplified gives 99/70
- So, 18/84 + 90/75 = 99/70
In mixed form: 129/70
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