In the equation, 5x+12=-2x-7+12, what is one of the steps that should be taken to solve for x

Nikolas calculated the volume of the prism. his work is shown below.

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.