Question
solve this equation. Tell whether the problem is a false equation or identity.
7x-9=2x
7x-9=2x
Answers
GPT 3.5
To solve the equation 7x - 9 = 2x, you need to isolate x on one side of the equation.
First, subtract 2x from both sides:
7x - 9 - 2x = 2x - 2x
5x - 9 = 0
Then, add 9 to both sides to isolate x:
5x = 9
x = 9 / 5
x = 1.8
Therefore, x = 1.8 satisfies the equation 7x - 9 = 2x.
This is not a false equation but a valid identity.
First, subtract 2x from both sides:
7x - 9 - 2x = 2x - 2x
5x - 9 = 0
Then, add 9 to both sides to isolate x:
5x = 9
x = 9 / 5
x = 1.8
Therefore, x = 1.8 satisfies the equation 7x - 9 = 2x.
This is not a false equation but a valid identity.