Multiply both the numerator and denominator of each fraction by the number that makes its denominator equal to the LCD. This is basically multiplying each fraction by 1.
(912×11)−(24×33)=?
Complete the multiplication and the equation becomes
912−612=?
The two fractions now have like denominators so you can subtract the numerators.
Then:
9−612=312
This fraction can be reduced by dividing both the numerator and denominator by the Greatest Common Factor of 3 and 12 using
