Add 28/40 and 90/18
1st number: 28/40, 2nd number: 5 0/18
28/40 + 90/18 is 57/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
28/40 = 28 × 9/40 × 9 = 252/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
90/18 = 90 × 20/18 × 20 = 1800/360 - Add the two like fractions:
252/360 + 1800/360 = 252 + 1800/360 = 2052/360 - 2052/360 simplified gives 57/10
- So, 28/40 + 90/18 = 57/10
In mixed form: 57/10
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