How do I isolate the variable here?
The challenge is to manipulate the equation to end with one of the form x = ???, while maintaining the equality at each step. First I would rewrite the equation as
You can multiply both sides of an equation by the same amount and maintain the equality, so at this point I would multiply both sides by -1. This will change the -2 to 2.
2x = -3
This equation is almost of the correct form x = ???, only the 2 remains as a problem. If you multiply both sides by 1/2 you will arrive at the desired form.
x = -3/2
Try another problem now. What about 5 = -3x?Penny