Add 12/80 and 90/45
1st number: 12/80, 2nd number: 2 0/45
12/80 + 90/45 is 43/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
12/80 = 12 × 9/80 × 9 = 108/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
90/45 = 90 × 16/45 × 16 = 1440/720 - Add the two like fractions:
108/720 + 1440/720 = 108 + 1440/720 = 1548/720 - 1548/720 simplified gives 43/20
- So, 12/80 + 90/45 = 43/20
In mixed form: 23/20
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