SOLUTION: If Toni must solve the equation 9x + 27 = 12x. If she substracts 9x from the left of the equation, what should Toni write on the right side of the equation?

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: If Toni must solve the equation 9x + 27 = 12x. If she substracts 9x from the left of the equation, what should Toni write on the right side of the equation?      Log On


   

Question 288690: If Toni must solve the equation 9x + 27 = 12x. If she substracts 9x from the left of the equation, what should Toni write on the right side of the equation?
Found 2 solutions by jim_thompson5910, texttutoring:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Whatever you do to the left side, you must do the same thing to the right. So Toni needs to subtract 9x from the right side as well.

Answer by texttutoring(324) About Me  (Show Source):
You can put this solution on YOUR website!
Toni must also subtract 9x from the right side of the equation, which would leave her with 3x.

12x-9x=3x

The equation will then be:
27=3x

Next, divide both sides by 3:
27/3=x
x=9