12-3(x-5)=-21

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Solution for 12-3(x-5)=-21 equation:


12-3(x-5)=-21

We simplify the equation to the form, which is simple to understand 
12-3(x-5)=-21

Reorder the terms in parentheses
12+(-3x+15)=-21

Remove unnecessary parentheses
+12-3x+15=-21

We move all terms containing x to the left and all other terms to the right. 
-3x=-21-12-15

We simplify left and right side of the equation. 
-3x=-48

We divide both sides of the equation by -3 to get x. 
x=16

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