Add 1/40 and 45/90
1/40 + 45/90 is 21/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
1/40 = 1 × 9/40 × 9 = 9/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
45/90 = 45 × 4/90 × 4 = 180/360 - Add the two like fractions:
9/360 + 180/360 = 9 + 180/360 = 189/360 - 189/360 simplified gives 21/40
- So, 1/40 + 45/90 = 21/40
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