Add 18/90 and 42/40
1st number: 18/90, 2nd number: 1 2/40
18/90 + 42/40 is 5/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
18/90 = 18 × 4/90 × 4 = 72/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
42/40 = 42 × 9/40 × 9 = 378/360 - Add the two like fractions:
72/360 + 378/360 = 72 + 378/360 = 450/360 - 450/360 simplified gives 5/4
- So, 18/90 + 42/40 = 5/4
In mixed form: 11/4
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