3x - 12
3(3x/3 - 12/3)
3(x - 4)
The answer is: 3(x - 4).
3x + 7 = x
First, subtract 3x from both sides. / Your problem should look like: 7 = x - 3x
Second, simplify x - 3x to -2x. / Your problem should look like: 7 = -2x
Third, divide both sides by -2. / Your problem should look like:

= x
Fourth, simplify

to

/ Your problem should look like:

= x
Fifth, switch sides. / Your problem should look like: x =

Answer as fraction:

Answer as decimal: -3.5
Answer:

Step-by-step explanation:
Add 2a² + a² + 2a² => 5a²
5a² ÷ 10a => a ÷ 2