# Thread: can some one check this for me?

1. ## can some one check this for me?

solving...

4x = 4-5(x+2)
Reorder the terms:
4x = 4 + -5(2 + x)
4x = 4 + (2 * -5 + x * -5)
4x = 4 + (-10 + -5x)

Combine like terms: 4 + -10 = -6
4x = -6 + -5x

Solving
4x = -6 + -5x

Move all terms containing x to the left, all other terms to the right.

Add '5x' to each side of the equation.
4x + 5x = -6 + -5x + 5x

Combine like terms: 4x + 5x = 9x
9x = -6 + -5x + 5x

Combine like terms: -5x + 5x = 0
9x = -6 + 0
9x = -6

Divide each side by '9'.
x = -0.6666666667

Simplifying
x = -0.6666666667I dont think that is right is it?

I make it x= 2

solving...

4x = 4-5(x+2)
Reorder the terms:
4x = 4 + -5(2 + x)
4x = 4 + (2 * -5 + x * -5)
4x = 4 + (-10 + -5x)

Combine like terms: 4 + -10 = -6
4x = -6 + -5x

Solving
4x = -6 + -5x

Move all terms containing x to the left, all other terms to the right.

Add '5x' to each side of the equation.
4x + 5x = -6 + -5x + 5x

Combine like terms: 4x + 5x = 9x
9x = -6 + -5x + 5x

Combine like terms: -5x + 5x = 0
9x = -6 + 0
9x = -6

Divide each side by '9'.
x = -0.6666666667

Simplifying
x = -0.6666666667I dont think that is right is it? Mr F says: It IS right, provided you only want a decimal approximation ....

I make it x= 2 Mr F says: Wrong.
The correct exact answer is -6/9 = -2/3.

3. Gee Ady, you're sure doing a lot of typing for this!

4x = 4-5(x+2)
Start this way:
5(x+2) + 4x = 4
Do the multiplication:
5x + 10 + 4x = 4
Move the 10:
5x + 4x = 4 - 10
Wrap up:
9x = -6
x = -6/9 = -2/3