Add 45/80 and 70/90
45/80 + 70/90 is 193/144.
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,
45/80 = 45 × 9/80 × 9 = 405/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
70/90 = 70 × 8/90 × 8 = 560/720 - Add the two like fractions:
405/720 + 560/720 = 405 + 560/720 = 965/720 - 965/720 simplified gives 193/144
- So, 45/80 + 70/90 = 193/144
In mixed form: 149/144
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Related: 90/80+70/90