Add 18/28 and 90/75
1st number: 18/28, 2nd number: 1 15/75
18/28 + 90/75 is 129/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 75 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 28 × 75 = 2100,
18/28 = 18 × 75/28 × 75 = 1350/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
90/75 = 90 × 28/75 × 28 = 2520/2100 - Add the two like fractions:
1350/2100 + 2520/2100 = 1350 + 2520/2100 = 3870/2100 - 3870/2100 simplified gives 129/70
- So, 18/28 + 90/75 = 129/70
In mixed form: 159/70
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