How to Subtract Fractions with Unlike Denominators

So, say we have the problem 3/6 - 2/8.

Step One: First, you have to find the LCD which stands for Least Common Denominator.( If the smallest denominator divides evenly into the biggest denominator.

 So, think what is the least common multiple that 6 and 8 go into, it's 24. When you can't find the LCD you just multiply both the denominators together.

Step Two: So, you think 6 x ? = 24. It's 4 so you multiply the numerator by 4. So, your new fraction is 12/24.

You do the same thing to the other fraction. So, you think 8 x ? = 24, it's 3. So, you multiply the numerator by 3. So, your new fraction is 6/24.

Step Three: Then, all you have to do is subtract our fractions. So, our problem is 12/24 - 6/24 = 6/24.

Step Four: Finally, all you have to do is simplify. So, divide 6/24 by 6/6 = 1/4.

So, your final answer is 1/4.

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