12-(4-3x)=21

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Solution for 12-(4-3x)=21 equation:


12-(4-3x)=21

We simplify the equation to the form, which is simple to understand 
12-(4-3x)=21

Remove unnecessary parentheses
12-4+3x=21

We move all terms containing x to the left and all other terms to the right. 
+3x=+21-12+4

We simplify left and right side of the equation. 
+3x=+13

We divide both sides of the equation by 3 to get x. 
x=4.3333333333333

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