To solve the equation -3x + 9 = 6x + 18, we can begin by grouping the x terms on one side of the equation.
First, we can subtract 6x from both sides to eliminate the x term on the right side:
-3x - 6x + 9 = 6x - 6x + 18
Simplifying this expression gives us:
-9x + 9 = 18
Next, we can subtract 9 from both sides to isolate the x term:
-9x + 9 - 9 = 18 - 9
Simplifying once again gives us:
-9x = 9
To solve for x, we can divide both sides by -9:
-9x / -9 = 9 / -9
Simplifying this expression gives us:
x = -1
Therefore, the solution to the equation -3x + 9 = 6x + 18 is x = -1.
-3x+9=6x+18
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