Complete the proof.
If 7 + 5x + 9 = −3x, then x = −2.
Drag and drop the reasons to correctly complete each box.
![Complete the proofIf 7 5x 9 3x then x 2Drag and drop the reasons to correctly complete each box class=](https://us-static.z-dn.net/files/dad/a60ae379a8fd8dee3d35fffb7a315585.jpg)