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12x -9x+ 6x +24+9x+15=15x-12+9x+15+9x
We simplify the equation to the form, which is simple to understand
12x-9x+6x+24+9x+15=15x-12+9x+15+9x
We move all terms containing x to the left and all other terms to the right.
+12x-9x+6x+9x-15x-9x-9x=-12+15-24-15
We simplify left and right side of the equation.
-15x=-36
We divide both sides of the equation by -15 to get x.
x=2.4
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