Explanations:
The given equation is 2x + 4 = -7x
The first step is to collect like terms, which means 2x will go and meet -7x on the right.
The equation becomes:
4 = -7x - 2x
4 = -9x
Divide both sides by -9, the equation becomes:
[tex]\begin{gathered} \frac{4}{-9}\text{ = }\frac{-9x}{-9} \\ \frac{-4}{9}=x \\ x\text{ = }\frac{-4}{9} \end{gathered}[/tex]