Can someone help me with this?

Question

x/ac - c + x³/a³

Answer 1

Hello, Jason,

What help do you need? I'll assume you have to add these different terms.

The denominators all need to be the same in order to add the numerators. Each term is shown in the left column below. I decide that the easiest would be to change the denominator to c*a^3 for each term, then sum them. The middle column is the conversion I used to get this denominator for each term. Note that they are all equal to "1." You can multiply anything by 1 and it won't change the term. Although it adds a bunch of clutter to the numerator, each of the multiplied terms will have the same denominator, c*a^3. The right column is the result of those conversions for just the numerator terms.

The sum of the numerators is shown below as N. The denominator (N) is c*a^3.

(x*a^2) -c*a^3 + c*X^3

c*a^3