4x-21=15

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Solution for 4x-21=15 equation:


4x-21=15

We simplify the equation to the form, which is simple to understand 
4x-21=15

We move all terms containing x to the left and all other terms to the right. 
+4x=+15+21

We simplify left and right side of the equation. 
+4x=+36

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

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