Answer:
She forgot to flip the inequality sign when dividing both sides by -4
Start off by combining like terms on the LHS (the terms with x in them).
So we get

Replacing this result with what we had before on the LHS, we get

⇒Solve for x (divide both sides

)
⇒Don't forget about reciprocity rules when dividing. This is the same as multiplying both sides by

⇒

⇒

***This is a proper fraction
0.78 converted to a percent would be 78%
3.615 x 10^2 i hope this helps