-6x-3x+15=-21

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Solution for -6x-3x+15=-21 equation:


-6x-3x+15=-21

We simplify the equation to the form, which is simple to understand 
-6x-3x+15=-21

We move all terms containing x to the left and all other terms to the right. 
-6x-3x=-21-15

We simplify left and right side of the equation. 
-9x=-36

We divide both sides of the equation by -9 to get x. 
x=4

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