I need help solving this equation. Thank You

Hi again Pj;

12x+9-4x-4=3x-7-x+30

Let's combine like terms on both sides...

(12x-4x)+(9-4)=(3x-x)+(-7+30)

8x+5=2x+23

Let's isolate x...

Let's subtract 5 from both sides...

-5+8x+5=2x+23-5

8x=2x+18

Let's subtract 2x from both sides...

-2x+8x=2x+18-2x

6x=18

Let's divide both sides by 6...

(6x)/6=18/6

x=3

Let's check our results in the original equation...

12x+9-4x-4=3x-7-x+30

Let's substitute x with 3...

[12(3)]+9-[4(3)]-4=[3(3)]-7-(3)+30

36+9-12-4=9-7-3+30

45-16=2+27

29=29

It works!