Answer:
When solving fractions with different denominators, you first need to make the denominators the same.
Example:
-
You need to make sure the denominators are the same.
Can 2 get multiply by something and will be 4?
The answer is yes, if you multiply 2 by 2, it will change the 2 to 4. You have to multiply the equation
by
(which is also equivalent to 1) and which change the equation to
.
And now you can subtract because the denominators are the same.
Hope this helps!
If you have any questions feel free to ask.