Add 80/90 and 25/40
80/90 + 25/40 is 109/72.
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,
80/90 = 80 × 4/90 × 4 = 320/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
25/40 = 25 × 9/40 × 9 = 225/360 - Add the two like fractions:
320/360 + 225/360 = 320 + 225/360 = 545/360 - 545/360 simplified gives 109/72
- So, 80/90 + 25/40 = 109/72
In mixed form: 137/72
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