12x - 9x = 6
3x = 6
x = ?
12x - 6 = 9x
Subtract 9x from both sides.
3x -6 = 0
3x = 6
I assume you can carry on from there.
first step: subtract x-variables to one-side of the equation
second step: divide -3 to the other side to get the value of x
x=2 (final answer)
Lastly, you can check your answer of x=2 by plugging it into the original equation to see if both sides of the equation are equal.
Therefore x=2 is correct
ALGEBRA - If I add: 1+2x+6x^2+9x^3+7-2x+6x^2-9x^3... won't I have to combine ...
Algebra 2 - Add. (1/12x^4 +8/9x^3 +5/8x^2 +5) + (-7/12x^4 +3/8x^2-5. I apologize...
algebra - 24x^4-12x^3+48x^2/-4x 24x^4-12x^3+12(-1) 24x^4-12x^3+(-12x) 2x^4-12x^3...
Math - Hello, Having trouble with this one... Solve the inequality: (2x-3)(4x)+x...
algebra 2 - how can I find the greatest common factor of 9x^6-6x^4+12x^3
Algebra II - Solve 1. 3x^2-9x=0 2. 12x^2+30x=-12 3. 9a(a+1)=4 4. 16x^2=25
Algebra - What is the equation of the line that is perpendicular to y = 7/9x + ...
Algebra: factoring - I need to find the value of x. 9x^3 + 9x = 30x^2 It's ...
college algebra - 12x+4y+2z=-7 (1) 3x-12y+6z=-4 (2) 9x-16y+4z=-3 (3) solve the ...
algebra - (12x+1)(x-1)=-3 12x^+1=-3 12x^=-1-3 x=1/3 check this problem