Homework Question?

Break it up into segments:

4 * 2x = 8x

4 * 3 = 12

= (8x+12)

3 * x = 3x

3 * -15 = -45

= (3x - 45)

So now he have:

8x + 12 + 3x - 45

collect terms:

8x + 3x & (+)12 - 45

11x - 33 = x - 3

Subtract x and ADD 3 from both sides of the equation:

10x - 30 = 0

Now, take the 30 over to the right (where 0 is) ie - add 30 to both sides.

10x = 30

Divide the 10 and the 30 by 10.

10x/10 = 30/10

x = 3

4(2x + 3) + 3(x - 15) = x-3

8x + 12 + 3x - 45 = x - 3

8x + 3x - x = -3 - 12 + 45

10x = 30

x = 30/10

x = 3

4(2x + 3) + 3(x - 15) = x - 3
10x = 30
x = 3