Question

Solve for x: 3(x + 1) = −2(x − 1) + 6

Answer 1

3x+3=-2x+8
3x=-2x+5
5x=5
x=1

Answer 2

All he did was multiply what is outside the bracket, with what is inside.

Answer 3

Then solved for x.

Answer 4

Here's a more interesting way to solve it:

3(x+1) = -2(x-1) + 6
3(x+1) - 6 = -2(x-1)
3((x + 1) - 2) = -2(x-1)
3(x-1) = -2(x-1)
3(x-1) + 2(x-1) = 0
5(x-1) = 0
x - 1 = 0
x = 1

Answer 5

I suspect @jiji501 has doubts about my solution

Answer 6

Or wait... yeah... I don't get it x_x

Answer 7

@Hero Care to explain? :)

Answer 8

The steps are plain as day. What exactly is it that you would like me to explain. I suppose you want me to explain the part where I factored out 3. or perhaps the part where I removed the parentheses from x + 1 , then added -2 to get x - 1.

Answer 9

Oh... explain to me how birds can fly.