Add 45/90 and 18/40
45/90 + 18/40 is 19/20.
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,
45/90 = 45 × 4/90 × 4 = 180/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
18/40 = 18 × 9/40 × 9 = 162/360 - Add the two like fractions:
180/360 + 162/360 = 180 + 162/360 = 342/360 - 342/360 simplified gives 19/20
- So, 45/90 + 18/40 = 19/20
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