4x-21=-5 - solution

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Solution for 4x-21=-5 equation:

4x-21=-5

We simplify the equation to the form, which is simple to understand 
4x-21=-5

We move all terms containing x to the left and all other terms to the right. 
+4x=-5+21

We simplify left and right side of the equation. 
+4x=+16

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

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