Question 695180: 3x+7=x-4
Answer by Simnepi(216)   (Show Source):
You can put this solution on YOUR website! Subtract x from both sides of the equation
3x+7 (- x) = x-4 (- x) (this eliminates the x from the right hand side of the equal sign)
so now you have
2x+7 = -4
now subtract 7 from both sides of the equation
2x+7 (- 7) = -4 (- 7) (this eliminates the plus 7 on the left hand side)
so now you have
2x = -11
dividing by 2 on both sides
2x/2 = -11/2 this gets rid of the number in front of the x (the coefficient of x) just leaving x on one side and a number on the other
x = -5.5
|
|
|
