Simplify and state restrictions.

We have the equation

First, we want the same denominator in both equations, so we can multiply in the left by 5, and in the right bt -ab, and now we have:

Now we have all in the same rational.

The only restriction in this type of equation is that the denominator never can be zero.

so 15*a*b = 0 is a restriction:

This means that a can not be zero, and b can not be zero.

none of these

step-by-step explanation:

23 + 34 add up to 57 so just inform the teacher of this really stupid mistake