Add 40/90 and 15/80
40/90 + 15/80 is 91/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
40/90 = 40 × 8/90 × 8 = 320/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
15/80 = 15 × 9/80 × 9 = 135/720 - Add the two like fractions:
320/720 + 135/720 = 320 + 135/720 = 455/720 - 455/720 simplified gives 91/144
- So, 40/90 + 15/80 = 91/144
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