The error is in step 2. if you are performing an operation on one side of the equation, it must be performed on the entire expression. you can’t only divide by 2 on one term, you must do it to everything in the equation. instead, you could add 6 to both sides first, giving you 2x = -4. Then you can divide by 2 on both sides. the answer is -2.
1. Distribute the Negative Signs
2. Combine like terms
-2x^2 + 12x-7
Answer:
1)a
2)d
3)b
4)c
Step-by-step explanation:
Car Z drives 87 miles per hour
