Add 12/16 and 72/90
12/16 + 72/90 is 31/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
12/16 = 12 × 45/16 × 45 = 540/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
72/90 = 72 × 8/90 × 8 = 576/720 - Add the two like fractions:
540/720 + 576/720 = 540 + 576/720 = 1116/720 - 1116/720 simplified gives 31/20
- So, 12/16 + 72/90 = 31/20
In mixed form: 111/20
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