Add 18/90 and 15/8
1st number: 18/90, 2nd number: 1 7/8
18/90 + 15/8 is 83/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 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 8 × 45 = 360,
15/8 = 15 × 45/8 × 45 = 675/360 - Add the two like fractions:
72/360 + 675/360 = 72 + 675/360 = 747/360 - 747/360 simplified gives 83/40
- So, 18/90 + 15/8 = 83/40
In mixed form: 23/40
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