Write the sentence into an equation step by step.
Star with twice x, which is 2 times x:
[tex]2x[/tex]Plus 4, which means you have to add 4:
[tex]2x+4[/tex]Is the same as -12, which means 2x+4 equals -12:
[tex]2x+4=-12[/tex]The last expression is the answer.