Add 20/80 and 40/90
20/80 + 40/90 is 25/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
20/80 = 20 × 9/80 × 9 = 180/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
40/90 = 40 × 8/90 × 8 = 320/720 - Add the two like fractions:
180/720 + 320/720 = 180 + 320/720 = 500/720 - 500/720 simplified gives 25/36
- So, 20/80 + 40/90 = 25/36
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